[Asterisk-Users] Newbie, Loaded Asterisk can't figure out manual

[Your Name]

Just loaded it yesterday running on TDM400P and X100P.  I have also
loaded the sample setttings.

1.  What's the first thing you guys do?  Change .conf files or do it
from CLI?

2.  Just trying to get it up and running to see if everything works.  Do
I setup Extensions first?

3.  Can I just remove some of the ; within the .conf files to get a
simple PBX working?

I would appreciate your thoughts and knowledge!

John