When I first started playing Tremulous--about a month ago--I didn't want to clog up a good server with my horrible playing, so I intentionally went to an unused server--Derelict pub test. Thinking that it's a test server, who's going to mind a noob here? I now know that it's a *map* test server, but things worked out.
On Derelict (Beyond Derelict), I met Dylan who was very helpful in providing someone for me to learn against. I'd like to thank him(?) for being so helpful and letting a noob 'get his sea legs'. Seeing how people behave on some servers--I'm making a list--I can see how easy it would have been for me to have met them first and gotten *completely* turned off by Tremulous and not come back. And what fun would that be? We, as a community lose when that happens.
Maybe, and I don't want to hijack this thread--I should go start a new one--someone (please) should start up a few servers with a 6 player cap dedicated to the teaching of noobs. To be on there, you either have to be a noob or an instructor--or fodder. Maybe make up some simple training maps just for those servers? Forget game balance and good base location, etc. Just make a map that teaches (humans and aliens) how to move, gives situations for different types of weapons, tactics, etc..
In summary, I think you were fine and that the other two--if they wanted to actually *play* should have split themselves between the two teams and provided you with a demonstation of how it's done. *that* would have been the good thing for them to do. PM me their names if you would. As I said, I'm keeping a list.

Cheers!