to learn how to count starting from 0, instead of 1. So now you can say: ARRAY [0] = 5 ARRAY [1] = 3 ARRAY [2] = 8 ... ARRAY [9] = 9000 Each stores it's own value. The reason arrays are so useful is that you can put variables in place if the elements. So, for example: X=9 PRINT ARRAY[X] Will print "9000". Changing X will allow you to print any other value stored in the array...