Hi,
Had this site bookmarked till I formatted my HDD. Took me forever to find site again.This is amazing step by step instructions. How to do your own A/C !!!!!!
is even here. In the process you learn how to use voltmeter properly, which I didn't lol, amoung other things.
So have at it and save a bundle. Go to bottom of page and click videos.Allow all popups. They deserve that much, and video may not play anyway.

http://www.advanceautoparts.com/english/specials/videoclinic.asp#

This is for all the help from this site for a 1 time nooby. Would make a great STICKY