diff --git a/Roadmap/03 - ESTRUCTURAS DE DATOS/python/Irenetitor.py b/Roadmap/03 - ESTRUCTURAS DE DATOS/python/Irenetitor.py
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+#STRUCTURES
+
+#List
+my_list = ["Red", "Blue", "Violet", "Pink", "Green"]
+print(my_list)
+#Adding
+my_list.append("Grey")
+print(my_list)
+#Insertion 
+my_list.insert(4, "Brown")
+print(my_list)
+#Deletion
+my_list.remove("Grey")
+print(my_list)
+#Update
+my_list[2] = "Dark blue"
+print(my_list)
+#Sort
+my_list.sort() #Asc
+print(my_list)
+my_list.sort(reverse=True) #Desc
+print(my_list)
+#Type
+print(type(my_list))
+print(hex(id(my_list)))
+'''
+Output
+['Red', 'Blue', 'Violet', 'Pink', 'Green']
+['Red', 'Blue', 'Violet', 'Pink', 'Green', 'Grey']
+['Red', 'Blue', 'Violet', 'Pink', 'Brown', 'Green', 'Grey']
+['Red', 'Blue', 'Violet', 'Pink', 'Brown', 'Green']
+['Red', 'Blue', 'Dark blue', 'Pink', 'Brown', 'Green']
+['Blue', 'Brown', 'Dark blue', 'Green', 'Pink', 'Red']
+['Red', 'Pink', 'Green', 'Dark blue', 'Brown', 'Blue']
+<class 'list'>
+'''
+
+#Set
+my_set = {"Apple", "Banana", "Plum", "Orange"}
+print(my_set)
+#Adding
+my_set.add("Cherry")
+my_set.add("Plum") #It won’t be added, since sets don’t allow duplicates.
+print(my_set)
+#Deletion
+my_set.remove("Plum")
+print(my_set)
+#Discard
+my_set.discard("Banana")
+print(my_set)
+#Update
+my_set2 = {"Kiwi", "Melon", "Raspberry"}
+my_set.update(my_set2)
+print(my_set)
+#Clear(empties the set)
+my_set2.clear()
+print(my_set2)
+#Delete
+del my_set2
+#Type
+print(type(my_set))
+'''
+Output
+0x1f4696cd900
+{'Orange', 'Apple', 'Banana', 'Plum'}
+{'Orange', 'Apple', 'Plum', 'Cherry', 'Banana'}
+{'Orange', 'Apple', 'Cherry', 'Banana'}
+{'Orange', 'Apple', 'Cherry'}
+{'Orange', 'Raspberry', 'Melon', 'Apple', 'Kiwi', 'Cherry'}
+set()
+<class 'set'>
+'''
+
+#Tuple
+my_tuple = ("Sara", "Daniel", "Saul", "Monica")
+print(my_tuple)
+#Access
+print(my_tuple[3])
+print(my_tuple[0])
+#Sort. We can use the sort() method, but it will convert our tuple into a list, so we should be aware of that.
+my_tuple = tuple(sorted(my_tuple))
+#Type
+print(type(my_tuple))
+'''
+Output
+('Sara', 'Daniel', 'Saul', 'Monica')
+Monica
+Sara
+<class 'tuple'>
+'''
+
+#Dictionary
+my_dic = {
+    "Name":"Oliver", 
+    "Surname":"Sanchez", 
+    "Age":"28", 
+    "Email":"oliver@gmail.com"
+    }
+print(my_dic)
+#Access
+print(my_dic["Name"])
+
+#Insertion 
+my_dic["Pet"] = "Dog"
+print(my_dic)
+#Deletion
+del my_dic["Surname"]
+print(my_dic)
+#Update
+my_dic["Pet"] = "Parrot"
+print(my_dic)
+#Sort
+my_dic = dict(sorted(my_dic.items()))
+print(my_dic)
+#Type
+print(type(my_dic))
+'''
+Output
+{'Name': 'Oliver', 'Surname': 'Sanchez', 'Age': '28', 'Email': 'oliver@gmail.com'}
+Oliver
+{'Name': 'Oliver', 'Surname': 'Sanchez', 'Age': '28', 'Email': 'oliver@gmail.com', 'Pet': 'Dog'}
+{'Name': 'Oliver', 'Age': '28', 'Email': 'oliver@gmail.com', 'Pet': 'Dog'}
+{'Name': 'Oliver', 'Age': '28', 'Email': 'oliver@gmail.com', 'Pet': 'Parrot'}
+{'Age': '28', 'Email': 'oliver@gmail.com', 'Name': 'Oliver', 'Pet': 'Parrot'}
+<class 'dict'>
+'''
+
+#Exercise
+
+def my_agenda():
+    agenda = {}
+    def insert_contact(in_name):
+        in_phone = input("Enter a telephone number: ").strip()
+        if in_phone.isdigit() and 1 <= len(in_phone) <= 11:
+                agenda[in_name] = in_phone
+        else:
+                print("Invalid phone. Use only digits, up to 11 characters.")
+                
+    while True:
+       
+
+        print("")
+        print("1. Search contact")
+        print("2. Insert contact")
+        print("3. Update contact")
+        print("4. Delete contact")
+        print("5. Exit")
+        option = input("\nSelect an option: ")
+
+        match option:
+            case "1":
+                in_name = str(input("Enter the name to search for: ")).strip()
+                if in_name in agenda:
+                    print(f"The telephone number of {in_name} is {agenda[in_name]}")
+                else:
+                    print(f"The contact name {in_name} does not exist.")
+            case "2":
+                in_name = str(input("Enter a name: ")).strip()
+                insert_contact()
+            
+            case "3":
+                in_name = str(input("Enter the name to update: ")).strip()
+                if in_name in agenda:
+                    insert_contact()
+                else:
+                    print(f"The contact name '{in_name}' does not exist.")
+
+            case "4":
+                in_name = str(input("Enter the name to delete: ")).strip()
+                if in_name in agenda:
+                    del agenda[in_name]
+                else:
+                    print(f"The contact name {in_name} does not exist.")
+            case "5":
+                print("Exiting agenda")
+                break
+            case _:
+                print("No valid option. Please choose an option between 1 and 5.")
+
+my_agenda()
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