A good place used to be The Forge. This website raises strong emotions, but it's undoubtedly good for publishing guidance. It is slowly closing down, but it's still worth posting there as a first step.
The Forge has a particular idea of what makes a good game: for example, expect a hard time if you're publishing a fantasy game. Crucially, however, they will give you the information you need: writing, design feedback, how to choose a printer, how to employ an artist. Everything. They have an ethic of encouraging new publishers.
Try reading through the Forge archives on particular topics. For example, if you want to do a print run, you'll get some good advice (most importantly, don't print 10000 copies).
Most of the Forge community have moved on to Story Games. That may be worth a try, too.
Generally, if you can speak to the indie games crowd, you'll probably find someone to point in the right direction. Follow them on Twitter. Email them politely. Speak to them at conventions. There are people around who will advise you, but they don't gather in one place any more.
(I hesitate to give you names! But think of the well-known indie games and try poking around. If you have a favourite game, contact the author politely. You'll find someone.)
Finally, you could ask more specific questions here. I recently published a book, Stealing Cthulhu, which sold very well in preorders. I'm happy to answer questions and I imagine other would be too.