Well first you need to knot that anonymous ain't one group. It is an unorganized collective. Technically you can just call yourself anonymous. You also don't necessarily have to be a hacker at all to be an anon. Not everyone there is an hacker. I mean LulzSec exists or existed idk.
Anyways I am sure that's not what you wanted to hear. Just be an Anon lol xD. If you wanna chat with other Anons there are couple IRC channels. Just use Google or any other search engine. Here is one of them though:
irc.anonops.com/6697
But no guarantee, that any of that is true.