diff --git a/README.md b/README.md
index fa0237d..e8c5795 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # OpenBootCampPython
 Repository to store Python boot camp.
+
+* Ejercicio 10.B: En este segundo ejercicio, tendréis que crear una interfaz sencilla la cual debe de contener una lista de elementos seleccionables, también debe de tener un label con el texto que queráis.
diff --git a/src/exerciseten/listaelementos.py b/src/exerciseten/listaelementos.py
new file mode 100644
index 0000000..987e377
--- /dev/null
+++ b/src/exerciseten/listaelementos.py
@@ -0,0 +1,87 @@
+import tkinter as tk
+
+
+class Application:
+    """Conceptual class for GUI application
+    :param master: main window of an application, default to None
+    :type master: tkinter.Tk
+    """
+    def __init__(self, master: tk.Tk = None):
+        """Constructor method
+        :return: None
+        :rtype: NoneType
+        """
+        # Parent setting
+        # # Size of the window
+        master.geometry('420x420')
+
+        # # Title of the window
+        master.title('Ejercicio 10.B')
+
+        # # Max and min window size
+        master.maxsize(width=420, height=420)
+        master.minsize(width=257, height=257)
+
+        # Variable
+        self._lbelements = ['Pan', 'Manzana', 'Tomate', 'Ternera', 'Quita grasa',
+                            'Bayeta', 'Escoba', 'Champú', 'Esponja', 'Crema hidratante']
+
+        # Widgets
+        self._lb = tk.Listbox()
+        self._l = tk.Label()
+
+        # Frame
+        # # Init main frame
+        self._main = tk.Frame(master=master, height=420, width=420)
+        self._main.grid_propagate(True)
+        self._main.pack(fill='both', expand=True)
+        self._main.rowconfigure(index=0, weight=420)
+        self._main.columnconfigure(index=0, weight=420)
+
+        # # Init listbox frame
+        self._flb = tk.Frame(master=self._main, height=1, width=1)
+        self._flb.pack(side='top', anchor='nw', expand=False)
+        self._flb.rowconfigure(index=0, weight=1)
+        self._flb.columnconfigure(index=0, weight=1)
+
+        # # Init label frame
+        self._fl = tk.Frame(master=self._main, height=1, width=1)
+        self._fl.pack(side='top', anchor='nw', expand=False)
+        self._fl.rowconfigure(index=0, weight=1)
+        self._fl.columnconfigure(index=0, weight=1)
+
+        # Place widgets into frames
+        self._createWidgets()
+
+        # Start application
+        master.mainloop()
+
+    def _createWidgets(self):
+        """Method to instance and place a listbox and label widgets
+        :return: None
+        :rtype: NoneType
+        """
+        # Listbox
+        # # Init radio buttons
+        self._lb = tk.Listbox(master=self._flb)
+        for item in self._lbelements:
+            self._lb.insert(tk.END, item)
+        self._lb.grid(column=0, row=0, ipadx=0, ipady=0, padx=10, pady=5, sticky=tk.N + tk.W)
+        self._l = tk.Label(master=self._fl, text='Seleccione un producto')
+        self._l.grid(column=0, row=1, ipadx=0, ipady=0, padx=10, pady=5, sticky=tk.N + tk.W)
+
+
+def mainApp() -> tuple[int, Application or None]:
+    """Main function to start Application class
+    :return: Application class, None when error exist
+    :rtype: tuple[tk.TclError, Application]
+    """
+    # Main window of an application
+    root = tk.Tk()
+
+    try:
+        # Class instance
+        app = Application(master=root)
+        return 0, app
+    except tk.TclError:
+        return 1, None
diff --git a/src/main.py b/src/main.py
index a47b6a3..0f5a751 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,9 +1,13 @@
+from exerciseten.listaelementos import mainApp
+
+
 def main():
-    """Main script for pythonBootCamp project
+    """Main script for exercise ten.B
     :return: None
     :rtype: NoneType
     """
-    pass
+    state, app = mainApp()
+    # exit(state)
 
 
 if __name__ == '__main__':