I created a small array example. This will show you the basics of arrays. Also mixing array's with tilemaps to show you how to get items from a tile_map but store the names of the items in an array. So you can call the names of an item from the tilemap with no issue.
Please let me know if this was a bad tutorial, I'm new to making tutorials but something I wanted to do because when I started CS2 I had no idea on arrays and actually how useful they're.