Yeah, those are awesome videos, he covers a lot of the core content from Water For Every Farm. Although it is a difficult read b/c of poor writing and numerous typos (some of the poorest editing I have ever seen), it is a great book to read if you want to learn more about this. But I warned you.
A lot of things come out of nowhere, so look everywhere.
I had watched these a few years back and was trying to describe them to my wife a few weeks back but couldn't find them. I stuck them into a youtube playlist here to make them easier to watch in series and so that I can find them again later.