Below is an excellent medical article on vertigo.

Great videos explaining benign positional vertigo and performing corrective maneuvers:

Modified Epley's Maneuver: click here.

Half Somersault Maneuver:  click here

Here are some other good articles:

A recent self-treatment for vertigo was developed by a medical doctor suffering from benign positional vertigo. She calls it the "somersault" method. The website is
www.halfsomersaultmaneuver.com