Definitely hook up with a squadron - it's the best, and you'll learn more, faster.
But pick one right for you and fly with them first so you get a feel for it all. Make sure the flying members are in the same timezone or you'll find yourself alone a lot.
In the end, if you are not asked to join and you want to, then ask - any squad worth it's salt will welcome new members.
Look here:
http://forum.1cpublishing.eu/showthread.php?t=25721
My crew is post #5, we do allied and axis and more importantly, we are active. If you want to jump in with us you are welcome.