I agree the support manuals available for the game are...well....what support manuals? There really isn't any.
Go look at the training material and you find lots of stuff that will now be out of date, as we have a WASD control scheme for vehicles. It still says to drive a tank, start engine with the E key, then push your stick forward.
Also, I will be damned if I can find ANYWHERE on the site where it tells you how to capture an enemy base. I recently restarted my account, and in the main arena there where a lot of guys talking about flags going white, but I didn't even know the flags in the town would change color. I am still used to the days when we fought over the airbases directly, and all you really needed was to kill the AAA so the paratroopers would survive to bum rush into the map bunker. Killing hangars was a good tactic to keep the enemy from spawning and prevent kamikaze runs to strafe the paratroopers.