Lists are a very important data type in Programming. They represent a collection (or list) of items. For example: a list of numbers, a list of names, etc.

In Python, these items in a list do not have to all be of the same type.  For example: a list can contain numbers, names, and other types at the same time.

Loops are a way of traversing these lists. Essentially saying: for every item in this list/collection -> do the following.