hey tom , shane has some pretty basic and easy to follow vids on his page you may like
Mike has some really good vids on learning slide along with some other great learning techniques.
Just scroll down his page and he has a vid on slide, he also has a bunch on youtube. Just click on the youtube tab on his home page and it'll take you to it.
I made a cbg tutorial dvd a few years ago, its free with my cbg purchase: http://www.jagshouse.com/cbg/cbgvideo.html