I'd suggest that you go to
rec.games.roguelike.development and try out the different 7DRL entries. They are roguelikes done in 7 days, and as such are much smaller, easier and simpler than the "normal" roguelikes.
Roguelikes are games where player skill matters as much, or even more, than character skill. Unfortunately, for most roguelikes this means that to have a chance of completing the game, you have to read some spoilers. Some are easier on this regard: all 7-day roguelikes, DoomRL, perhaps something like Dungeon Crawl where you need tactics and good equipment choice, and where you can choose what to tackle next to avoid things you can't handle yet.