Below is one of his vidoes, this one being about the proper way to rosin your bow (including some unique tricks he's picked up along the way. Bass Rosin?)
In other videos he explains different bow strokes, the sound of different bridges and strings, gives advice on managing practice sessions, demonstrates multiple vibrato styles and so much more.
The 100 videos in his series cover such a wide range of topics and are applicable to every level of cellist. Check it out!