In case you missed the last opening, Flight Rising is having another one tomorrow, November 17, starting at 5:30 AM (PST). The website will remain open until 5:30 AM (PST) on November 18. It is typically closed to new members for the majority of the year, so if you've been wanting to join the website, this opening is the time to do so. If you do join, I'd appreciate it if you put me down as your referrer (feel free to add me to your friends list if you'd like to as well). Let me know if you do, and I might just send you a gift. I'm Ziiendris (#992).
Don't know what Flight Rising is or need help with the basics? Check out this thread
onsite. Basically, you breed pretty dragons, dress them up, battle them, have them bond with familiars, play games, etc. The place is pretty big/active (at the time of this writing, there are over 2,300 people online), and there's plenty of things to do. If you have any questions, feel free to ask me. I've been a member of the site since it originally opened to the public.
If you're wondering about which flight you should join, don't worry about it *too* much. You can change it later for free one time (after that, I believe you have to wait six months and pay a Gem fee to change it again). The biggest thing it determines is what color your hatchlings' eyes are (each flight has its own private forums, too - you may or may not interact with your assigned teammates more often than other people). Here's a handy flight eye color guide
to check out.