That's sort of a vague question...
Are you a new player? If so, I recommend you taking a look at the Stickys on the Main Alla forums
for tips on what to expect as a new player and such. I personally have not looked at those guides myself, but I'm very sure its helpful for new players.
Assuming you are a new player, you may want to find yourself a Linkshell home; a Linkshell being, basically, a group of players that talk and/or do events in game. You can consider it like a community if friends that either enjoy the company of each other or join together to achieve certain goals (or both). Since you're starting, you may want to focus on finding a social shell.
There are a lot of good social shells on Carbuncle. If you wish to join mine, HeavenisticChaos, just visit my sig below for information on it. I do, however, suggest you open the possibility to joining a few social shells. Reason is, each of the Linkshells have different environments, and one shell maybe better suited for you then another. Again, many of the social shells on Carby are great, but different personalities and individuals might go to your liking on one shell then it does for another.
In conclusion, aside from that, I think the forums and a LS would be a good way to start. Forums can give you a general idea of what to expect, and a LS can give you the in-game/on-the-spot answers to questions you may have during your play. I personally like to learn things on my own, as you tend to enjoy the experience better and such, but of course to each their own.
Advanced welcome to our server. You'll be happy to find a lot of nice people on here >.>b.