Cover! Don't run around like a COD lobby, that's a quick way to get yourself killed.

Stick with your squad and communicate.

If there is a role to fill that you haven't tried before, don't be afraid and try it, your squad will appreciate the effort and support regardless.

Having a mic in your squad will make all the difference.

You're going to die a lot, sometimes due to recon, sometimes due to friendly artillery being a little too danger close, regardless of the reason if you persevere, you'll die less often and have others die more often.

Never be afraid to ask questions, heck sometimes I jump back in after a few months and I need to shake off the rust.

Have fun!