A few things to keep in mind:
Variables are CASE SENSITIVE! 'car' does not equal to 'CAR'.
Variables cannot begin with a number! But they can contain numbers and special characters.
typeof(x) can be used to find the type of variable something is.
To fork the fiddle and follow along: https://jsfiddle.net/easyjs/dns0bk90/
Remember to checkout the Resources section below for associated downloadable content, JSFiddle links, and other resources. Watch the video and follow along!