Steering is the first thing you should learn, and you probably already
know how to do this.
Then again, this is the absolute newbieguide.
This should keep you moving about. More about tweaking the settings for both keyboard and mouse in chapter "Basic configuration".
A rotate counterclockwise S rotate clockwise <SHIFT> Accelerate <ENTER> Shoot <SPACE> Raise shield <PAUSE/BREAK> Pause <KP_ENTER> Toggle between keyboard- and mouse-steering
Pausing is also a little tricky. You have to be on your base if you want to pause. This means it is best to press <PAUSE/BREAK> when you have just died and are still sitting on your base.
You will have to adjust your .xpilotrc manually then. Just add this line: