diff --git a/src/advanced.js b/src/advanced.js
index 692c1fb..4d1f35b 100644
--- a/src/advanced.js
+++ b/src/advanced.js
@@ -1,13 +1,35 @@
 // 1. create a const variable called item1 and set it to an object with the following properties:
 // name of 'item1', price of 400, and quantity of 4, hasDiscount of true, discount of 0.3
-const item1 = undefined
+const item1 = {
+  name: 'item1',
+  price: 400,
+  quantity: 4,
+  hasDiscount: true,
+  discount: 0.3
+}
+
+console.log(item1)
 
 // 2. create a const variable called item2 and set it to an object with the following properties:
 // name of 'item2', price of 300, and quantity of 3, hasDiscount of false, discount of 0.0
-const item2 = undefined
+const item2 = {
+  name: 'item2',
+  price: 300,
+  quantity: 3,
+  hasDiscount: false,
+  discount: 0.0
+}
+
+console.log(item2)
 // 3. create a const variable called shoppingBasket and set it to an object with the following properties:
 // items - an array containing item1 and item2, and shopName called 'Sheepmart'
-const shoppingBasket = undefined
+
+const shoppingBasket = {
+  items: [item1, item2],
+  shopName: 'Sheepmart'
+}
+
+console.log(shoppingBasket)
 
 module.exports = {
   item1,
diff --git a/src/core.js b/src/core.js
index 6380dd5..eb5a9c9 100644
--- a/src/core.js
+++ b/src/core.js
@@ -3,31 +3,78 @@ const person = { age: 32, size: 'Small' }
 
 // 1. Give the person object a name property with the value Matt
 
+person.name = 'Matt'
+
+console.log(person)
+
 // 2. Remove the size property from the person
 
+delete person.size
+
+console.log(person)
+
 // 3. Increase the person's age by 11
 
+person.age += 11
+
+console.log(person)
+
 // 4. Add an instruments property to the person, initialised as an empty array
 
+person.instruments = []
+
+console.log(person)
+
 // 5. Add the following instruments to the persons instruments array: Guitar, Piano, Vocals
 
+person.instruments = ['Guitar', 'Piano', 'Vocals']
+
+console.log(person)
+
 // 6. Using an index on the instruments array, set the mainInstrument variable below
 // to the third instrument in the array
-const mainInstrument = undefined
+
+const mainInstrument = person.instruments[2]
+
+console.log(mainInstrument)
 
 // 7. Add a profession property to the person, which is an object
 
+person.profession = {}
+
+console.log(person)
+
 // 8. Add a name property to the profession object with the value Musician
 
+person.profession.name = 'Musician'
+
+console.log(person)
+
 // 9. Add a friends property to the person, which is an empty array
 
+person.friends = []
+
+console.log(person)
+
 // 10. Add two objects to the persons friends array with the following properties:
 // Friend one: name - Chris, age - 46
 // Friend two: name - Dom, age - 43
 
+person.friends.push(
+  { name: 'Chris', age: 46 },
+  { name: 'Dom', age: 43 }
+);
+
+console.log(person)
+  
+
+
 // 11. Using an index on the persons friends array, set the bestFriend variable below
 // to the name of the first friend in the array
-const bestFriend = undefined
+
+const bestFriend = person.friends[0].name
+
+console.log(bestFriend)
 
 // Don't change the code below this line
 module.exports = {
diff --git a/src/extension.js b/src/extension.js
index 38f327f..018fb74 100644
--- a/src/extension.js
+++ b/src/extension.js
@@ -15,14 +15,22 @@ const book = {
   dimensions: '10x12x2'
 }
 
+
+
 /* eslint-disable no-unused-vars */
 const isbn13 = '978-0132350884'
 
 // 1. Set this to the book name - using the book object
-const name = ''
+
+const name = book.name
+
+console.log(name)
+
 
 // 2. Set this to the isbn 10 value - using the book object
-const isbn10 = ''
+const isbn10 = book.isbn.isbn10
+
+console.log(isbn10)
 
 // Do not modify this basket object directly
 const basket = {
@@ -41,11 +49,18 @@ const basket = {
   voucherCodes: ['AA-AA-A', 'BB-BB-B']
 }
 
+
+
 // 3. Set this variable to the length of the baskets voucher codes array - using the basket object
-const numberOfVoucherCodes = null
+
+const numberOfVoucherCodes = basket.voucherCodes.length
+
+console.log(numberOfVoucherCodes)
 
 // 4. Set this variable to the first element in of the baskets voucher codes array - using the basket object
-const firstVoucherCode = null
+const firstVoucherCode = basket.voucherCodes[0]
+
+console.log(firstVoucherCode)
 
 // Do not edit this exported object
 module.exports = {
@@ -56,3 +71,24 @@ module.exports = {
   numberOfVoucherCodes,
   firstVoucherCode
 }
+
+
+book.category = 'Programming'
+
+book.pages = 464
+
+book.isbn.isbn10 = '978-0132350884'
+
+console.log(basket)
+
+delete book.isbn.asin
+
+delete book.dimensions
+
+book.isbn.isbn10
+
+basket.items.push({ name: 'Oranges', price: 0.75, quantity: 4})
+
+basket.items[0].price = 2;
+
+book.isbn.isbn13 = '978-0132350884'
\ No newline at end of file