This site is invaluable.
When we got our pool, I thought I knew what I was doing - I mean, after-all, when I grew up we had a pool and in college, I cleansed pools (I WAS the pool-boy). As time progressed on our backyard piece-of-art, we started having more and more problems... and providing more and more money out of my wallet to Leslie's than I ever should have.
This site - in the course of a weekend - has proven invaluable for the DIY-er: and that's definitely me!
p.s., now, if I could just find another similar site for lawn-care and get those **** yellow patches taken care of...