Objects and Arrays
An array is a way of storing multiple items and each item is associated to a number called the index. Each item can be accessed using the index value. Objects are usually associated to meaningful pieces of data which it can hold and manipulate.
Extra Credit
Try creating an object that represents you. Include all sorts of things about you, like your name as a string, and your favorite songs as an array. Explore how objects can be nested in other objects, and arrays.