Thanks crassius. I learn a little bit here and there. I like the fact that the video is well done and can guide a total beginner like myself through in a professional manner, with everything step by step. Easier to study than a lot of videos of garage dudes.
I don't like to send anyone to a vid to learn something - it can only show one way to do one thing, when in real life there are way too many things that may/may not need doing and how to do it depends on which kind of that situation you're in. Much better to properly learn about something to get an understanding of how all the parts fit together and why.
google gives answers, learning gives understanding