I was browsing the Internet and happen to stumble upon a game guide Maciej Jalowiec of Game Pressure and decided to look through it. I was very impressed, and I have not really seen anything like this before (sorry if it was already posted, but even if it was, I still feel like it should be made known again). A lot of the items addressed in the guide are pretty well known through the community, but I thought it would still be nice to post for all of us "newbs" out there.
http://guides.gamepressure.com/battlefield2142/
It is a 53 page guide complete with map tactics, game mode tip, vehicle strong and weak points, air tactics, sniper tips, aiming guide, explosives guides, and loads of other things. It is one of the best guides I've ever run into for any game. Although some of the information doesn't go very deep into certain things, it is still incredibly useful.