I make extensive use of short focused videos for training.
I have uploaded a few ASP.Net membership videos.
Here are the hyper links to those videos.
Asp.Net Membership II
CreateUserWizard
Asp.Net 2.0 Membership IV Roles
Asp.Net 2.0 Membership V Role and Membership Classes
Asp.Net 2.0 Membership V Denying Anonymous users
Asp.Net 2.0 Membership VIII Protecting a folder