what are we even doing here man
if someone doesn't have experience with arrays, then they don't have enough experience with programming to hire them to program for you. they are still on page 9 of the programming book
Specifically, this one.
The Usborne guide to Better BASIC: a beginners guide to writing programs (1983)
See? Page 9. Arrays.

Usborne released a bunch of their old 80s programming books for free a while back, and they're all just a gem:

https://usborne.com/us/books/computer-and-coding-books

@foone The GOSUB robot from "Computer Programming in BASIC" has lived rent-free in my head for 40 years