Hiya, welcome to PC, our favorite transforming Pokemon! :3
I highly recommend Art & Design, as AWsquared said, if you're looking to get into art. PC has some of the most amazing artist and it's been one of my favorite places to check out when I lurk the forum. You can request forumsets (avatars & signatures) there too, assuming a shop for those is open at the time. ^^ If you're ever confused about that section,
Derozio or
Alexial357 would be the people to go to! Though pretty much any staff member's willing to help with whatever if you're confused, even if it's regarding a section they don't moderate, so don't feel like you have to go to specific people. We're quite open around here!
As for suggestions, hm... I'll echo the clicking "new posts" at the top option since it's really easy to see different threads across the forum that way. But I'll also suggest the
Pokemon Gaming Central board for you since you might enjoy discussing the Pokemon games as a whole, I think. :D There's also the amazing
Challenges section where you can sign up to participate in challenges with different requirements. There's a lot of other things though, so get exploring~! You'll definitely have a great time!
Pleasure meeting you, Ditto. n~n Enjoy your stay on PokeCommunity!