Here are some useful links to get you started properly.
Firstly and most importantly, if you haven't already, read our Community Guidelines . This is a guide on how to act on here and in game. After that, it's time to pick up that promotion, so you won't be kicked when the next purge comes along. You can find all information in this thread. (Remember to visit the forums quite often to stay informed should we do a Representative purge )
If you have any questions about GTA racing techniques, car choices, etc, I would suggest checking out the Guide to Racing in GTA Online. It contains useful information on racing in GTA for all different levels of racers.
Also consider joining one of our live chat clients: Slack and TeamSpeak3 to get even more involved in the community as a whole.
Finally, if you have some creations to shows off or want to find good tracks to race on, check out the Content Creator thread.
If you ever have any questions, issues or concerns, then feel free to send me or a Commissioner a message and we can help you out!