Like MG's but for houses! Almost :-)

About an hour or so ago, I was googling for help troubleshooting an AC system, and came across this: Air Conditioning Diagnosis, Inspection, Repair Guide

I haven't looked at the rest of the site, but the AC part is detailed, easy to use, and very helpful. I thought I'd share it, since it's a great resource, especially if you're an ignoramus like me.