@pooltoymae I found nethack's complexity is intimidating. Now my plan is to start from rogue, the original game, and working my way up. The original BSD had a manual called "A Guide to the Dungeons of Doom", which can still be found in the FreeBSD documentation: https://docs.freebsd.org/44doc/usd/30.rogue/paper.html Rogue should be 1 or 2 orders of magnitude simpler than nethack, I hope.
@niconiconi Original Roque is pretty simple to learn how to get around in. A little harder to understand the mechanics of, and for me, impossible to figure out how to be any good at.
Hack adds only slightly more. Nethack adds a lot and makes it a more fleshed out universe but the basics from Rogue still apply.