He has prepared nearly two dozen lessons for advanced players which can be accessed by anyone who signs up with an ArtistWorks subscription, starting at $35/month.
As a guest instructor, only these prepared lessons are available. The primary instructors at ArtistWorks also will create critique videos for student submissions. Missy Raines is their main bluegrass bass instructor.
Here’s a sample video taken from one of Paul’s lessons.
You can find more information online.