Bloody hell, my name is also Jared, so everytime someone types it, I keep thinking their post is to me

Anyway, if you ask me, the Concise Guide is complete rubbish. I read a lot of it ages ago, and just has really really general information. EWLD (usually you don't abbreviate "the" or "of) is a much better read, is much more detailed, and has many more techniques, and sub-techniques. I wouldn't even waste your time with the other one.