Dummies guide

Hi guys,

Is there a dummies guide about on how to do some basic things? I'm really unfamiliar with the terminology with this software.

Basically, I've installed the software and have it running with web interface etc. I want to be able to group users and give different groups access to different rooms. Is this possible. If so, is it possible to then create users with access to that group via command line/PHP?

Thanks for your help. I've been searching the last few hours with no joy, just terminology I don't understand.

Thanks!