Hi saranperl,

You appear to be taking on a lot of learning at once, not a bad thing, but it can be frustrating ;)

Try the following: Data: Arrays come back to us if there are elements of this you don't understand

In essence an array is a variable and a list is a literal, but read the documentation for greater detail and genuine understanding, you need to gain genuine understanding of the basics to progress your learning

Update:Added shortcut to online documentation