separate numbers, letters, characters and other types that exist. We have strict names for them that are used to identify the type they are, like the following: Int - Which is an Integer which you know as a number value like 1, 2, 3, 4 or 10 or 55 Decimal - Which is a decimal, an amount value with a point or decimal like 1.0 , 45.6, 78.00 or 78.99 String - Which is a letter or word value like "A", "B", "C", "speed", "hectic" as you can see the letters and words have been enclosed in inverted commas, this is how we know and write a string value, so that means if I am to write "105" it would not be an int (Integer) but rather a string value. Boolen - Is a True or False value. Which can also be represented by 1 and 0 just like on your kettle or light switch where you have seen 1 or 0. 1 would be ON; which means true and 0 would be OFF which means false. Now that you know four types that are used in programming, I will explain how they are used. You may have noticed I used the word value for each of the descriptions of the types, this is because what a type describes is a value. For example an int type can represent the value 1 or the value 2 or the value 17 just like the type String can have the value "tree" or the letter "H". I would now like to introduce a Variable. Think of variable as a container, yes a container that carries your lunch or dessert etc... but in programming this container is known as a variable that carries types; types like int, string, boolean, decimals and so on. Enough theory, Let us get a bit more practical here using a real world example, remember when you went to a clothing store and wanted to make sure you look good in the clothes before making the purchase? So you went to the changing rooms and at the entrance you met Chuck - Whose duty was to count the amount of items you want to try on, give you a number and show you which changing to room use? Well Chuck's job was more than that, this is what his manager required from him. 1. Create a card to hold a customer details. 2. The card should have a place for following: The total amout of clothing items. The total cost of the items. The type of T-Shirt being tried. The type of Pants being tried. Identify if customer is an Adult.