Array's are basically lists. They store one type of variable, such as ints or strings. You create an array by doing ARRAYNAME = [TOTALITEMS] and you access items from it doing ARRAYNAME[NUMBER]. It always starts at 0 and goes to the total item amount - 1. like ARRAY = [9] then it would go from ARRAY[0] to ARRAY[8]. It's like this in literally every programming language.