Where can I ask less stupid questions? - SLRPNK

Newbie here. My keyboard just completely crapped out (it’s been a long time coming). I have a wishlist of features that I was hoping to run by one of the techy communities to see if anyone could recommend a model, but none of the communities I’m seeing are geared toward those kinds of questions. I can search communities, but if I don’t guess the correct title then I’m SOL… Is there a directory that doesn’t just list the communities, but actually categorizes them so I can more effectively find a hit? Also is it worth posting in a ‘dead’ community? Unsure if a new post will have any visibility in places like /all if the post itself is in a community that no one frequents. Learning the ropes here. Thanks all!