diff --git a/.vscode/settings.json b/.vscode/settings.json
index 23698105..e44b35fc 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -3,7 +3,7 @@
   "editor.cursorBlinking": "solid",
   "editor.fontFamily": "ui-monospace, Menlo, Monaco, 'Cascadia Mono', 'Segoe UI Mono', 'Roboto Mono', 'Oxygen Mono', 'Ubuntu Monospace', 'Source Code Pro', 'Fira Mono', 'Droid Sans Mono', 'Courier New', monospace",
   "editor.fontLigatures": false,
-  "editor.fontSize": 22,
+  "editor.fontSize": 16,
   "editor.formatOnPaste": true,
   "editor.formatOnSave": true,
   "editor.lineNumbers": "on",
@@ -17,8 +17,7 @@
   "files.autoSave": "afterDelay",
   "screencastMode.onlyKeyboardShortcuts": true,
   "terminal.integrated.fontSize": 18,
-  "workbench.activityBar.visible": true,
   "workbench.colorTheme": "Visual Studio Dark",
   "workbench.fontAliasing": "antialiased",
   "workbench.statusBar.visible": true
-}
+}
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_01_invitations_ch.sql b/01_restaurant/challenges/01_01_invitations_ch.sql
index c83188eb..13e82c22 100644
--- a/01_restaurant/challenges/01_01_invitations_ch.sql
+++ b/01_restaurant/challenges/01_01_invitations_ch.sql
@@ -1,4 +1,19 @@
--- Generate a list of customer information.
+-- Generate a list -- yes a list!--of customer information.
 
 -- Show their first name, last name, and email address.
--- Sort the list of results by last name.
\ No newline at end of file
+-- Sort the list of results by last name.
+SELECT
+  FirstName,
+  LastName,
+  Email
+
+FROM 
+  Customers
+
+  ORDER BY 
+    LastName
+
+CREATE TABLE AnniversaryPartyAttendess )
+    CustomerID INTEGER,
+    PartySize INTEGER
+  );
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_02_anniversary_ch.sql b/01_restaurant/challenges/01_02_anniversary_ch.sql
index d68138bb..80ff6213 100644
--- a/01_restaurant/challenges/01_02_anniversary_ch.sql
+++ b/01_restaurant/challenges/01_02_anniversary_ch.sql
@@ -4,4 +4,7 @@
 -- Associate a customer's ID number with the number of people
 -- they plan to bring in their party.
 
--- Hint: SQLite offers the INTEGER and REAL datatypes
\ No newline at end of file
+-- Hint: SQLite offers the INTEGER and REAL datatypes
+CREATE TABLE AnniversaryParty (
+  CustomerID INTEGER,
+  Party INTEGER);
diff --git a/01_restaurant/challenges/01_03_printmenus_ch.sql b/01_restaurant/challenges/01_03_printmenus_ch.sql
index cd202d34..0be0017a 100644
--- a/01_restaurant/challenges/01_03_printmenus_ch.sql
+++ b/01_restaurant/challenges/01_03_printmenus_ch.sql
@@ -2,4 +2,18 @@
 
 -- Create a report with all the items sorted by price (lowest to highest).
 -- Create a report showing appetizers and beverages.
--- Create a report with all items except beverages.
\ No newline at end of file
+-- Create a report with all items except beverages.
+
+/*Types: Appetizer, Main, Dessert, Beverage
+*/
+
+SELECT
+  Name,
+  Type,
+  Price
+FROM
+  Dishes
+WHERE 
+  Type IN ('Appetizer', 'Beverage');
+ORDER BY
+  Type;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_04_newcustomer_ch.sql b/01_restaurant/challenges/01_04_newcustomer_ch.sql
index f47fb847..ac5f557c 100644
--- a/01_restaurant/challenges/01_04_newcustomer_ch.sql
+++ b/01_restaurant/challenges/01_04_newcustomer_ch.sql
@@ -3,4 +3,18 @@
 -- Use the following information to create a record:
 -- Anna Smith (asmith@samoca.org)
 -- 479 Lapis Dr., Memphis, TN
--- Phone: (555) 555-1212; Birthday: July 21, 1973
\ No newline at end of file
+-- Phone: (555) 555-1212; Birthday: July 21, 1973
+
+INSERT INTO
+Customers (FirstName, LastName, Email, Address, City, State, Phone, Birthday)
+VALUES 
+  ('Anna', 'Smith', 'asmith@samoca.org', '479 Lapis Dr.', 'Memphis', 'TN', '(555) 555-1212',
+   '1973-07-21');
+
+   SELECT * FROM Customers ORDER BY CustomerID DESC;
+
+DELETE
+FROM 
+  Customers
+WHERE
+  CustomerID = 101;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_05_updateinfo_ch.sql b/01_restaurant/challenges/01_05_updateinfo_ch.sql
index ad034f88..2f7ddbf0 100644
--- a/01_restaurant/challenges/01_05_updateinfo_ch.sql
+++ b/01_restaurant/challenges/01_05_updateinfo_ch.sql
@@ -1,4 +1,25 @@
 -- Update a customer's contact information.
 
 -- Taylor Jenkins, of 27170 6th Ave., Washington, DC,
--- has moved to 74 Pine St., New York, NY.
\ No newline at end of file
+-- has moved to 74 Pine St., New York, NY.
+
+SELECT 
+  CustomerID,
+  FirstName,
+  LastName,
+  Address
+FROM
+  Customers
+WHERE
+  FirstName = 'Taylor'
+AND
+  LastName = 'Jenkins';
+
+UPDATE 
+  Customers
+SET 
+  Address = '74 Pine St.', City = 'New York', State = 'NY'
+WHERE
+  CustomerID = 26;
+
+Select * FROM Customers WHERE CustomerID = 26;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_06_removeinfo_ch.sql b/01_restaurant/challenges/01_06_removeinfo_ch.sql
index 56d912f9..3b4c32a9 100644
--- a/01_restaurant/challenges/01_06_removeinfo_ch.sql
+++ b/01_restaurant/challenges/01_06_removeinfo_ch.sql
@@ -2,4 +2,51 @@
 
 -- A customer named Norby has notified us he won't 
 -- be able to keep his Friday reservation. 
--- Today is July 24, 2022.
\ No newline at end of file
+-- Today is July 24, 2022.
+
+-- Find his customer ID, 
+-- locate the date, get Reservation ID
+-- remove the for where Reserveration ID = blahblahblah
+
+SELECT
+  LastName,
+  FirstName,
+  CustomerID
+FROM
+  Customers
+WHERE
+  LastName = 'Norby'
+  OR
+  FirstName = 'Norby';
+
+SELECT
+  ReservationID,
+  Date(Date) as Day
+
+FROM
+  Reservations
+WHERE
+  CustomerID = 64
+  AND
+  Day > '2022-07-24';
+
+SELECT 
+  *
+FROM  
+  Reservations r
+INNER JOIN
+  Customers c 
+ON
+  c.CustomerID = r.CustomerID
+WHERE
+  (c.LastName = 'Norby'
+  OR
+  c.FirstName = 'Norby')
+AND
+  r.Date > '2022-07-22';
+
+DELETE
+FROM 
+  Reservations
+WHERE
+  ReservationID = 2000;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_07_attendevent_ch.sql b/01_restaurant/challenges/01_07_attendevent_ch.sql
index 11a66a24..4fb87c3d 100644
--- a/01_restaurant/challenges/01_07_attendevent_ch.sql
+++ b/01_restaurant/challenges/01_07_attendevent_ch.sql
@@ -1,4 +1,18 @@
 -- Register a customer for our Anniversary event.
 
 -- The customer 'atapley2j@kinetecoinc.com' will be in
--- attendance, and will bring 3 friends.
\ No newline at end of file
+-- attendance, and will bring 3 friends.
+
+INSERT INTO
+  AnniversaryParty (CustomerID, Party)
+VALUES (
+  (SELECT
+    c.CustomerID
+  FROM
+    Customers c
+  WHERE
+    c.Email = 'atapley2j@kinetecoinc.com'),
+    8);
+Select * FROM AnniversaryParty;
+
+  
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_08_findreservation_ch.sql b/01_restaurant/challenges/01_08_findreservation_ch.sql
index 13f598ab..8b6f767f 100644
--- a/01_restaurant/challenges/01_08_findreservation_ch.sql
+++ b/01_restaurant/challenges/01_08_findreservation_ch.sql
@@ -4,4 +4,23 @@
 -- Variations of the name include:
 -- Stevensen, Stephensen, Stevenson, Stephenson, Stuyvesant
 
--- There are four people in the party. Today is June 14th.
\ No newline at end of file
+-- There are four people in the party. Today is June 14th.
+
+SELECT
+  r.ReservationID,
+  c.FirstName||' '||c.LastName as [Reservation Name],
+  r.PartySize,
+  r.Date
+
+FROM
+  Reservations r 
+INNER JOIN
+  Customers c
+ON
+  r.CustomerID = c.CustomerID
+
+WHERE
+  c.LastName LIKE 'St%'
+AND
+  r.Date LIKE '%06-14%'
+;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_09_createreservation_ch.sql b/01_restaurant/challenges/01_09_createreservation_ch.sql
index 49ee4666..c94b061c 100644
--- a/01_restaurant/challenges/01_09_createreservation_ch.sql
+++ b/01_restaurant/challenges/01_09_createreservation_ch.sql
@@ -3,4 +3,159 @@
 
 -- Use the following information:
 -- Sam McAdams (smac@kinetecoinc.com), for 5 people
--- on August 12, 2022 at 6PM (18:00)
\ No newline at end of file
+-- on August 12, 2022 at 6PM (18:00)
+
+
+/*
+Holy fuck stick. I tried over and over to get this going in one statement, but could never get it to work.
+The instructor did it in 3 separate statements, which was SO MUCH EASIER!! I could have done that.
+
+Here:
+*/
+
+SELECT 
+  CustomerID
+FROM
+  Customers
+WHERE
+  Email = 'smac@kinetecoinc.com';
+/* no answer, because it doesn't exist yet. 
+So add him to Customers */
+
+INSERT INTO
+  Customers (FirstName, LastName, Email)
+  VALUES ('Sam', 'McAdams', 'smac@kinetecoinc.com');
+
+SELECT *
+FROM Customers
+ORDER BY CustomerID Desc 
+LIMIT 5;
+/* Now customer exists. ID 102...
+So add his reservation */
+
+INSERT INTO 
+  Reservations (CustomerID, Date, PartySize)
+VALUES (102, '2022-08-12 18:00:00',5);
+
+SELECT *
+FROM 
+  Reservations
+ORDER BY
+  ReservationID DESC LIMIT 5;
+
+-- -----------------------------
+
+INSERT INTO
+  Customers (FirstName, LastName, Email)
+  Values ('Sam', 'McAdams', 'smac@kinetecoinc.com')
+-- test for not existing: 
+WHERE NOT EXISTS (
+    SELECT 1
+    FROM
+        Customers
+    WHERE
+        Email = 'smac@kinetecoinc.com'
+)
+INSERT INTO 
+  Reservations (CustomerID, Date, PartySize)
+  VALUES(
+  (SELECT
+    c.CustomerID
+  FROM
+    Customers c
+   WHERE
+    c.Email = 'smac@kinetecoinc.com'), '2022-08-12 18:00:00',5);
+
+SELECT * FROM Customers ORDER BY CustomerID DESC LIMIT 10;
+
+SELECT * From Reservations ORDER BY Date Desc Limit 10;
+
+
+
+-- -------------------------------
+IF EXISTS
+  (SELECT 1
+  FROM
+    Customers c
+  INNER JOIN
+    Reservations r 
+  ON
+    c.CustomerID = r.CustomerID
+  WHERE
+    c.Email = 'smac@kinetecoinc.com');
+
+
+-- ---------------------------------------------------
+
+
+IF EXISTS
+  (SELECT
+    c.CustomerID
+  FROM
+    Customers c
+  INNER JOIN
+    Reservations r 
+  ON
+    c.CustomerID = r.CustomerID
+  WHERE
+    c.Email = 'smac@kinetecoinc.com')
+BEGIN
+-- if customer already exists, add them to the reservations
+  INSERT INTO
+    Reservations (CustomerID, Date, PartySize)
+    VALUES (c.CustomerID, '2022-08-12 18:00:00',5)
+END
+ELSE
+-- If customer does not exist, create customer, then add reservation
+  INSERT INTO
+  Customers (FirstName, LastName, Email)
+  VALUES ('Sam','McAdams','smac@kinetecoinc.com')
+-- now add reservation for new customer
+  BEGIN
+    INSERT INTO
+      Reservations (CustomerID, Date, PartySize)
+
+      VALUES(
+      (SELECT
+        c.CustomerID
+      FROM
+        Customers c
+      INNER JOIN
+        Reservations r 
+      ON
+        c.CustomerID = r.CustomerID
+      WHERE
+        c.Email = 'smac@kinetecoinc.com'),
+        '2022-08-12 18:00:00',5)
+  END;
+
+SELECT * FROM Customers ORDER BY CustomerID DESC LIMIT 10;
+
+SELECT * From Reservations ORDER BY Date Desc Limit 10;
+
+
+      (SELECT 
+        c.CustomerID
+      FROM 
+        Customers c 
+      WHERE
+        c.Email = 'smac@kinetecoinc.com')
+
+
+INSERT INTO
+  Reservations (CustomerID, Date, PartySize)
+
+VALUES(
+(SELECT
+  c.CustomerID
+FROM
+  Customers c
+INNER JOIN
+  Reservations r 
+ON
+  c.CustomerID = r.CustomerID
+WHERE
+  c.Email = 'smac@kinetecoinc.com'),
+  '2022-08-12 18:00:00',5);
+
+Select * FROM Reservations ORDER BY Date DESC;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_10_takeorder_ch.sql b/01_restaurant/challenges/01_10_takeorder_ch.sql
index 54ed21e3..89c901e0 100644
--- a/01_restaurant/challenges/01_10_takeorder_ch.sql
+++ b/01_restaurant/challenges/01_10_takeorder_ch.sql
@@ -6,4 +6,76 @@
 -- Items: 1 House Salad, 1 Mini Cheeseburgers, and
 -- 1 Tropical Blue Smoothie
 -- Delivery date and time: September 20, 2022 @ 2PM (14:00)
--- There are no taxes or other fees.
\ No newline at end of file
+-- There are no taxes or other fees.
+
+/*
+Find the customer - search in Customers, get ID
+Create order record - add CustomerID and Order Date ('2022-09-22 14:00:00') to Orders table
+                    - Get Order ID
+From the Dishes table - Get Dish IDs
+Add items to order - Add OrderID (multiple time) and DishIDs to OrdersDishes
+Find total cost  - sum the Prices from the Dishes table
+*/
+
+SELECT 
+  CustomerID
+FROM Customers
+WHERE
+  FirstName = 'Loretta' 
+  AND LastName = 'Hundey';
+
+INSERT INTO 
+  Orders (CustomerID, OrderDate)
+ VALUES (
+  (SELECT 
+  CustomerID
+FROM Customers
+WHERE
+  FirstName = 'Loretta' 
+  AND LastName = 'Hundey'), '2022-09-22 14:00:00');
+
+SELECT * FROM Orders ORDER BY OrderID DESC;
+-- Success! OrderID is 1001
+
+-- Items: 1 House Salad, 1 Mini Cheeseburgers, and
+-- 1 Tropical Blue Smoothie
+SELECT 
+  DishID
+FROM
+  Dishes
+WHERE
+  Name = 'House Salad' OR -- 4
+  Name = 'Mini Cheeseburgers' OR -- 7 
+  Name = 'Tropical Blue Smoothie'; -- 20
+
+INSERT INTO 
+  OrdersDishes (OrderID, DishID)
+VALUES(1001,4),(1001,7),(1001,20);
+
+-- ------- ** integrated way to combine the above 2 statements --------------
+INSERT INTO 
+  OrdersDishes (OrderID, DishID)
+VALUES
+(1001, (SELECT DishID FROM Dishes WHERE Name = 'House Salad')),
+(1001, (SELECT DishID FROM Dishes WHERE Name = 'Mini Cheeseburgers')),
+(1001, (SELECT DishID FROM Dishes WHERE Name = 'Tropical Blue Smoothie'));
+
+-- -------- ** end integration ----------------------------------------------
+
+
+SELECT * FROM OrdersDishes ORDER BY OrdersDishesID Desc LIMIT 5;
+-- Cool! orders added successfully to order
+-- now get the cost
+
+SELECT 
+  SUM (d.Price)
+FROM
+  Dishes d
+INNER JOIN 
+  OrdersDishes od
+ON
+  d.DishID = od.DishID
+WHERE
+  od.OrderID = 1001;
+
+-- total cost is $21.00
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_11_trackfavorites_ch.sql b/01_restaurant/challenges/01_11_trackfavorites_ch.sql
index 149d18a7..244f036f 100644
--- a/01_restaurant/challenges/01_11_trackfavorites_ch.sql
+++ b/01_restaurant/challenges/01_11_trackfavorites_ch.sql
@@ -1,4 +1,26 @@
 -- Update information in the database.
 
 -- Set Cleo Goldwater's favorite dish to
--- the Quinoa Salmon Salad.
\ No newline at end of file
+-- the Quinoa Salmon Salad.
+
+-- Experiment:
+SELECT
+  CustomerID
+FROM
+  Customers c
+WHERE
+  c.FistName = Cleo AND
+  c.LastName = Goldwater;
+-- she is customerID 42
+
+
+-- My trial:
+UPDATE
+  Customers
+SET
+  FavoriteDish = (SELECT DishID FROM Dishes WHERE Name = 'Quinoa Salmon Salad')
+WHERE
+  CustomerID = (SELECT CustomerID FROM Customers c WHERE c.FirstName = 'Cleo' AND c.LastName = 'Goldwater');
+
+-- confirm:
+SELECT * FROM Customers WHERE CustomerID = 42;
\ No newline at end of file
diff --git a/01_restaurant/challenges/01_12_bestcustomers_ch.sql b/01_restaurant/challenges/01_12_bestcustomers_ch.sql
index 7325900b..3cf4feda 100644
--- a/01_restaurant/challenges/01_12_bestcustomers_ch.sql
+++ b/01_restaurant/challenges/01_12_bestcustomers_ch.sql
@@ -1,3 +1,20 @@
 -- Identify a few customers who have ordered delivery
 -- from the restaurant the most often, so we can send
--- them a promotional coupon.
\ No newline at end of file
+-- them a promotional coupon.
+
+SELECT
+  o.CustomerID,
+  c.FirstName||' '||c.LastName as [Customer Name],
+  c.Email,
+  Count(o.OrderID) AS [Number of Orders]
+FROM
+  Orders o
+INNER JOIN
+  Customers c
+ON
+  o.CustomerID = c.CustomerID
+GROUP BY
+  o.CustomerID
+ORDER BY 
+  [Number of Orders] DESC
+LIMIT 10;
\ No newline at end of file
diff --git a/01_restaurant/restaurant.db b/01_restaurant/restaurant.db
index 07e2cd1a..c3b18ad3 100644
Binary files a/01_restaurant/restaurant.db and b/01_restaurant/restaurant.db differ
diff --git a/02_library/challenges/02_01_checkavailability_ch.sql b/02_library/challenges/02_01_checkavailability_ch.sql
index 8af48cca..a9554ec1 100644
--- a/02_library/challenges/02_01_checkavailability_ch.sql
+++ b/02_library/challenges/02_01_checkavailability_ch.sql
@@ -1,2 +1,43 @@
 -- Determine how many copies of the book 'Dracula'
--- are available for library patrons to borrow.
\ No newline at end of file
+-- are available for library patrons to borrow.
+
+SELECT
+  BookID
+FROM 
+  Books
+WHERE
+  Title = 'Dracula';
+-- IDs are 12, 60, 73
+
+-- ---------- ** First trial -----------
+SELECT *
+FROM 
+  Loans
+WHERE
+  BookID IN (12, 60, 73)
+ORDER BY 
+  BookID
+  ;
+-- ------- ** My completed steps ----------
+SELECT
+  LoanID,
+  b.BookID,
+  b.Title,
+  b.Author,
+  PatronID,
+  MAX(LoanDate) [Loan Date],
+  DueDate,
+  ReturnedDate
+FROM
+  Loans l
+INNER JOIN
+  Books b
+ON
+  b.BookID = l.BookID
+WHERE
+  l.BookID IN (SELECT BookID FROM Books WHERE Title = 'The Scarlet Letter')
+GROUP BY 
+  l.BookID;
+
+
+
diff --git a/02_library/challenges/02_02_addbook_ch.sql b/02_library/challenges/02_02_addbook_ch.sql
index 9c0334d8..3868fbfe 100644
--- a/02_library/challenges/02_02_addbook_ch.sql
+++ b/02_library/challenges/02_02_addbook_ch.sql
@@ -8,4 +8,25 @@
 -- Title: Gulliver’s Travels into Several Remote Nations of the World
 -- Author: Jonathan Swift
 -- Published: 1729
--- ID Number: 4899254401
\ No newline at end of file
+-- ID Number: 4899254401
+
+SELECT
+  BookID,
+  Title,
+  Author,
+  Barcode
+FROM
+  Books
+WHERE
+  Title = 'Dracula' OR
+  Title = 'Gulliver''s Travels into Several Remote Nations of the World'
+Order BY
+  Title ASC;
+
+INSERT INTO
+  Books (Title, Author, Published, Barcode)
+  VALUES 
+    ('Dracula', 'Bram Stoker', 1897, 4819277482),
+    ('Gulliver''s Travels into Several Remote Nations of the World', 'Jonathan Swift', 1729, 4899254401)
+    ;
+  
\ No newline at end of file
diff --git a/02_library/challenges/02_03_checkout_ch.sql b/02_library/challenges/02_03_checkout_ch.sql
index ca5efe93..03c144cf 100644
--- a/02_library/challenges/02_03_checkout_ch.sql
+++ b/02_library/challenges/02_03_checkout_ch.sql
@@ -2,4 +2,36 @@
 -- Book 1: The Picture of Dorian Gray, 2855934983
 -- Book 2: Great Expectations, 4043822646
 -- The checkout date is August 25, 2022 and the 
--- due date is September 8, 2022.
\ No newline at end of file
+-- due date is September 8, 2022.
+
+-- First, the simple code --------
+SELECT
+  BookID,
+  Title
+FROM
+  Books
+WHERE
+  Barcode = 2855934983 OR
+  Barcode = 4043822646;
+
+SELECT PatronID FROM Patrons WHERE Email = 'jvaan@wisdompets.com';
+
+-- ---------------- ** My integrated code ------------------
+INSERT INTO
+  Loans (BookID, PatronID, LoanDate, DueDate)
+  VALUES (
+    (SELECT BookID FROM Books WHERE Barcode = 2855934983),
+    (SELECT PatronID FROM Patrons WHERE Email = 'jvaan@wisdompets.com'),
+    '2022-08-25', '2022-09-08'
+   ),
+   ( 
+    (SELECT BookID FROM Books WHERE Barcode = 4043822646),
+    (SELECT PatronID FROM Patrons WHERE Email = 'jvaan@wisdompets.com'),
+    '2022-08-25', '2022-09-08'
+  )
+
+-- -------------- Code for checking -----------------
+SELECT *
+FROM Loans
+ORDER BY LoanID DESC
+LIMIT 5; 
diff --git a/02_library/challenges/02_04_booksdue_ch.sql b/02_library/challenges/02_04_booksdue_ch.sql
index df5bdcb3..9a3923fd 100644
--- a/02_library/challenges/02_04_booksdue_ch.sql
+++ b/02_library/challenges/02_04_booksdue_ch.sql
@@ -1,4 +1,29 @@
 -- Prepare a report of books due to be returned
 -- to the library on July 13, 2022.
 -- Provide the due date, the book title, and
--- the borrower's first name and email address.
\ No newline at end of file
+-- the borrower's first name and email address.
+
+-- --------------** Did this integrated solution in one fell swoop this time ----------------
+SELECT
+ l.LoanID,
+ l.LoanDate,
+ l.DueDate,
+ l.ReturnedDate,
+ b.Title,
+ p.FirstName||' '||p.LastName as [Patron Name],
+ p.Email
+FROM
+  Loans l
+INNER JOIN
+  Books b
+ON
+  l.BookID = b.BookID
+INNER JOIN
+  Patrons p
+ON
+  l.PatronID = p.PatronID
+WHERE
+  DueDate <= '2022-07-13'  -- I changed the operator to '<=' from '=' to see ALL overdue books. 
+  AND ReturnedDate IS NULL
+ORDER BY
+  l.LoanDate ASC;
\ No newline at end of file
diff --git a/02_library/challenges/02_05_returnbooks_ch.sql b/02_library/challenges/02_05_returnbooks_ch.sql
index 8279e71c..79aba3f5 100644
--- a/02_library/challenges/02_05_returnbooks_ch.sql
+++ b/02_library/challenges/02_05_returnbooks_ch.sql
@@ -3,4 +3,40 @@
 -- Return date: July 5, 2022
 -- Book 1: 6435968624
 -- Book 2: 5677520613
--- Book 3: 8730298424
\ No newline at end of file
+-- Book 3: 8730298424
+
+-- ---------------First is the dead simple look-up code ----
+SELECT 
+  l.LoanID,
+  b.Title,
+  MAX(l.LoanDate),
+  l.DueDate,
+  l.ReturnedDate
+FROM Loans l 
+INNER JOIN Books b
+ON l.BookID = b.BookID
+WHERE
+  b.Barcode = 6435968624
+  OR b.Barcode = 5677520613
+  OR b.Barcode = 8730298424
+GROUP BY
+  l.BookID
+;
+-- ------------------ 1-liner code for integration ------------
+-- this is the over-engineered part:
+SELECT l.LoanID FROM Loans l INNER JOIN Books b ON l.BookID = b.BookID WHERE b.Barcode = 6435968624 GROUP BY l.BookID
+
+-- --------------------** my integrated code ------------------------
+-- ------------------ I initially over-engineered it. I just needed to find the "is null" returned dates
+UPDATE
+  Loans
+SET 
+  ReturnedDate = '2022-07-05'
+FROM
+  Loans l
+WHERE
+  ((SELECT BookID FROM Books WHERE Barcode = 6435968624) AND l.ReturnedDate IS NULL)
+  OR ((SELECT BookID FROM Books WHERE Barcode = 5677520613) AND l.ReturnedDate IS NULL)
+  OR ((SELECT BookID FROM Books WHERE Barcode = 8730298424) AND l.ReturnedDate IS NULL)
+;
+
diff --git a/02_library/challenges/02_06_visitreminder_ch.sql b/02_library/challenges/02_06_visitreminder_ch.sql
index 867d15d4..a74cf9b2 100644
--- a/02_library/challenges/02_06_visitreminder_ch.sql
+++ b/02_library/challenges/02_06_visitreminder_ch.sql
@@ -1,2 +1,21 @@
 -- Prepare a report of the library patrons
--- who have checked out the fewest books.
\ No newline at end of file
+-- who have checked out the fewest books.
+
+-- ------------ This time, the dead-simple code did it on the first go -------------
+SELECT
+  p.FirstName||' ' ||p.LastName as [Patron Name],
+  p.Email,
+  l.PatronID,
+  Count(l.LoanID) as [Number of Loans]
+FROM
+  Loans l
+INNER JOIN
+  Patrons p
+ON
+  p.PatronID = l.PatronID
+GROUP BY
+  l.PatronID
+ORDER BY
+  [Number of Loans] ASC
+LIMIT
+  20;
diff --git a/02_library/challenges/02_07_featurebooks_ch.sql b/02_library/challenges/02_07_featurebooks_ch.sql
index 541d39a4..7b68064a 100644
--- a/02_library/challenges/02_07_featurebooks_ch.sql
+++ b/02_library/challenges/02_07_featurebooks_ch.sql
@@ -1,4 +1,37 @@
 -- Create a list of books to feature in an exhibit.
 
 -- Make a pick list of books published from 1890-1899 
--- which are not currently checked out.
\ No newline at end of file
+-- which are not currently checked out.
+
+SELECT
+  BookID,
+  Title,
+  Author,
+  Published
+FROM
+  Books
+WHERE
+  Published BETWEEN 1890 AND 1899
+ORDER BY 
+  Title ASC
+-- --------------------------
+SELECT BookID FROM Books WHERE Published BETWEEN 1890 AND 1899  
+-- --------------------------
+SELECT
+  l.BookID,
+  b.Title,
+  b.Author,
+  b.Published
+FROM
+  Loans l 
+INNER JOIN
+  Books b
+ON
+  l.BookID = b.BookID
+WHERE
+  l.BookID in (SELECT BookID FROM Books WHERE Published BETWEEN 1890 AND 1899) AND
+  l.ReturnedDate NOT NULL
+GROUP BY
+  Title
+ORDER BY
+  Title ASC;
\ No newline at end of file
diff --git a/02_library/challenges/02_08_bookstats_ch.sql b/02_library/challenges/02_08_bookstats_ch.sql
index 2e473f5d..cbbc60fe 100644
--- a/02_library/challenges/02_08_bookstats_ch.sql
+++ b/02_library/challenges/02_08_bookstats_ch.sql
@@ -4,4 +4,67 @@
 -- in each year.
 
 -- Report 2: Show the five books that have been
--- checked out the most.
\ No newline at end of file
+-- checked out the most.
+
+-- # of books published in each year:
+SELECT
+  Count(DISTINCT Title) as [Number of Books],
+  Published
+FROM
+  Books
+--WHERE
+--  (SELECT DISTINCT Published FROM Books)
+GROUP BY
+  Published
+Order BY
+  [Number of Books] DESC;
+
+-- top five most-checked out books
+-- This ended up only accounting for individual copies, not multiple copies of same book. See "integrated code" for total answer
+SELECT
+  Count(l.BookID) as [How Many Times],
+  l.BookID,
+  b.Title,
+  b.Author
+FROM
+  Loans l
+INNER JOIN
+  Books b
+ON
+  l.BookID = b.BookID
+GROUP BY
+  l.BookID
+ORDER BY
+  [How Many Times] DESC
+LIMIT 5;
+
+-- --- Top 5 checked out books -- My integrated code wh/accounts for multiple copies ---- 
+SELECT
+  b.Title,
+  b.Author,
+  COUNT (DISTINCT l.LoanID) AS [Total Checkouts]
+FROM
+  Loans l 
+INNER JOIN
+  Books b 
+ON
+  l.BookID = b.BookID
+--WHERE           -- *** I was breaking my head to get this part, but in the end, we did not need it.
+--  b.Title IN (Select DISTINCT(Title) FROM Books)
+GROUP BY 
+  b.Title
+ORDER BY
+  [Total Checkouts] DESC
+LIMIT 5
+;
+
+-- Simple code : This gets all the book IDs ---
+SELECT
+BookID
+--Title
+FROM
+Books
+WHERE
+Title IN (Select DISTINCT(Title) FROM Books)
+ORDER BY
+Title
\ No newline at end of file
diff --git a/02_library/library.db b/02_library/library.db
index 8af83972..5cf4fb3a 100644
Binary files a/02_library/library.db and b/02_library/library.db differ