Echolink:
Active Node List - See who is on the echolink system now!
EchoLink.org Homepage - Allows hams to link to other stations through the internet. Software is free for licensed hams.
RigBlaster - Rig-to-Computer interface by West Mountain Radio.

Testing Links: Use an online practice test to study for an upgrade.
http://www.qrz.com/p/testing.pl (I like this one, worked well for many other hams and I)
http://www.eham.net/exams/

Local Amateur Clubs:
Tech Amateur Radio Association (TARA) - New Mexico Tech's Active Amateur Radio Club
Socorro Amateur Radio Association
Valencia County Amateur Radio Association

New Mexico:
http://www.swcp.com/~n5zgt/abqham.htm - Albuquerque Repeaters, etc
Albuquerque New Mexico Transmitter Hunting Homepage
Upper Rio FM Society, Inc. - This is a huge club associated with a large array of repeater systems in New Mexico and surrounding states.
New Mexico Frequency Coordination Committee - Coordinated N.M. repeater frequencies, etc.
NM VE Sessions