Any other useful commands?
Sure any of the helpfiles are useful - in fact, help new is a good helpfile
The following commands you use without help in front of them:
Commands gives you an extensive list of known commands for the game.
Toggle lets you alter certain settings.
Who lets you see who's currently online.
Where shows you who is in the same area you're in.
Look around (or l around) shows you the name of the zone you're in and
the level range for the zone.
Tell <playername>lets you talk to that particular person.
Re lets you reply to someone that just sent you a tell.
If there are no helpfiles available and you still have questions concerning
the game you can try your luck on the newbiechannel. Type newbie followed
by your question and maybe someone will answer you there.