My local supply house had a stack of Leviton books titled, "Wiring strategies for voice and data systems", that has a good overview of the basic systems, color codes etc. A basic telecom tool kit, tone generator reciever, butt set, stapler & punch down tool is about 250-300 bucks. with most of that being the butt set.
I got handed the phone system here,(46 extensions, voice mail, the whole bit) and was told "fix it", learning curve went straight up.
Trainwire
try http://www.phonegeeks.com

[This message has been edited by Trainwire (edited 08-14-2002).]