Hello there and welcome to PC!
I can't never find myself selling my Pokemon games, I'm too attached them. I can get someone selling theirs if they're not interested in Pokemon anymore, but right now I'm too addicted to Pokemon to get rid of mine. Hahaha. I enjoyed FireRed alot cause of all the memories from the originals. I was one of the original players of Red and Blue after all. Generation III (Ruby, Sapphire, Emerald, FireRed, and LeafGreen) is probably my absolute favorite generation of Pokemon too. You've seem to have found your way to Advanced Generation Gaming already, so I don't need to send you there, but keep checking it out. There's many topics on the games of gen III including FireRed and you can also find help for your games in
The Simple Questions and Answer Thread (Which is where you should of asked your question. It's fine I'm not a mod so I can't doing anything about it. XD) right here. For most other Generations of Pokemon games just browse
General Pokemon Gaming Discussions. I'm sure you'll find somethings to talk about here. We have lots of diversity when it comes to the range of topics here.
Gen VI looks like it will be amazing. I truly can't wait for X and Y, everything about them so far seem spectacular. They seem to be better than Gen V were so far, especially in terms of the designs of the new Pokemon. While we wait for them to be released in October, there's always the
Pokemon X and Y section to keep us busy. There you can discuss things that have been revealed along with speculate thing that might be. Also since you seem to be buying games again, you can play those to keep you occupied! I personally would start from where you last left off and play Emerald and then Diamond or Pearl and you can work your way up from there. You should be plenty busy that way! :D
Anyway, welcome and I hope you can enjoy it here. We have friendly members so I'm sure you can get along with most people here. Remember you can ask any moderator or staff member any questions you may have, they will be there to assist you. There's also many regular members who can be helpful too so don't be shy to ask question. See you around and have fun here!