Welcome to PC!
Aw, no need to be shy! PC is the friendliest forum out there. Trust me about this. As someone with social anxiety, I had no problem finding people to talk to here, since everyone--from members to staff--are really nice and friendly, willing to answer questions or even talk to you.
Since you like reading and proofreading, there's always a need for reviewers in Fanfiction and Writing. Or, if you just like talking about reading books, there's a thread to talk about books in General Entertainment about
what books you're currently reading. And of course, there's the local
Roleplay Theatre where you can join in on various roleplays.
As for your Pokemon game, if it's a ROM hack, you can check out the
ROM hacking section. Check out the various sections and guides located in each to see where the best fit is for your topics. There are some requirements for posting a thread in ROM Hacking, but the rules (posted as stickies at the top of the various sections) say what your thread needs to be approved for posting. If you have some questions or just want to make sure your thread is good for posting, you can always ask the moderators
Spherical Ice and
Christos.
If your thread isn't a ROM hack, there's the
Game Development forum, modded by
Maruno. Again, there are guidelines for posting in this section outlined in the stickies, so you can check those out.
Don't worry if you make a mistake here. PC's staff won't get mad. They'll help you out and guide you so you can enjoy your time here, because that's what they like to see members do. Just relax and have fun.