Thought I'd thank scannerdanner for all the knowledge I've gained from his book and videos. Little back story on me from 2008 until August of 2016 I was a brake alignment suspension mechanic. So for almost 8 years I did absolutely zero electrical or diag at work. I did some, but very little, on my own stuff. Got a new job in August and do a little bit if everything. Now I do more diag in a week at the new job than I did in 8 years at the last one. So I knew I had to do something so I got the book and subscribed to both channels. Today I took 4 ASE tests suspension, brakes, electrical, and engine performance. I knew I would miss some but only missed 3 on engine performance and didn't miss any on electrical. So thank you scannerdanner.