Hello there, welcome to PC!
Klefki is one of my fave new Pokemon this gen, and despite being heavy meme bait on Tumblr lately it seems like a very fun Pokemon to use given how many resistances the little key ring has. Anyways, Cirno has already got your interests covered by linking the XY Friend Codes thread, plus we do have sections like Battle Center and Trade Corner if you like battling and trading.
But yeah, good luck and I hope you can make loads of new friends along the way, both there and around the forums in general. The staff are always there to assist you if you need help, but I'm happy to lend a hand every now and then due to how familiar I am with the community. Anyways, I do hope to see you around the forums! Have fun!