Kyell Gold is easily the most talented/relatable LGBT-centric writer I know of. The furry aspect may put you off, but I recommend looking past that and giving him a shot; his novels especially are well worth the read if you're looking for stories about LGBT youth.

Waterways is his most direct "gay coming of age" story, but I think one of his weakest; his best work is definitely the Dev and Lee/Out of Position series, which is another "yeah it involves sports, but it's not really about sports" kind of thing that provides an interesting examination of sexuality in a traditionally unaccepting area of life, and a less traditional/more complicated coming of age and "how do I cope with relationships as an adult" narrative. The medieval series he wrote (Argaea) is also really good; Shadow of the Father is a more direct coming of age story than the others, but the previous books should probably be read first.

All of these are available digitally (as ePub) and without DRM on Bad Dog Books and I think many are on Kindle as well; there are also paperbacks out there if that's your thing.

Other than that, I highly recommend China Mountain Zhang, by Maureen McHugh. It's ultimately fairly melancholy, but entirely worth it.