PC is famous for its hacks, so you picked a great community to join indeed. Welcome to the forums, Fenwick! We always love having new faces around here.
As Dragon pointed out earlier you will definitely love the ROM Hacking board since that's our major hub for all things related to ROM hacks. It's basically the Lumiose City of PC, in that it's the forum's most active section so it is easy to get lost in there but there's people there who can give you a helping hand. There's so many tools and resources you can use when making your hack, and they were made by some of PC's best hackers so you'll confident you're getting resources from the best.
Creating a hack can take time, but keep at it and eventually you'll be able to show it to the world. Sadly, I have little-to-no knowledge in hacks myself so I sadly won't be much help to you but as you know there should be someone there who can help. And when you need a break from hacking, there's all the other sections we have around, such as the various Pokemon sections.
It was really nice to welcome you today, and I hope you stick around!
- Hikamaru