hello!
been using asterisk with freepbx/trixbox/elastix.
and it has been 100% gui configuration for me.
i feel more powerful ways of using asterisk lie in non-gui configuration.
when i see something like,
exten=> blah blah blah,
i feel helpless.
if you would point to a good document(s), i’d appreciate it.
thanks.
Wow some one that wants to learn the real deal 
.
Read this book (Asterisk: The future of telephony).
h6315.com/ast_docs/Asterisk%20TFOT%20v2.pdf
Hi,
I also would like to see more documents concerning asterisk without gui.
thanks for the link.
j
www.voip-info.com is your friend
For the other newbies who may try that link, it should be http://www.voip-info.org