The websites below offer training material.

The USAPA website offers a number of instructional pages as well a several training videos.
USA Pickleball Association

Pickleball Coach has a lot of instructional information as well as videos to watch. You can buy the complete set on DVD. Well worth the price of $14.95.
Pickleballcoach.com

AZpickleballFun has instructions as well as a number of pactrice drills.
AZPicklebalFun

Alan Christensen who lives in nearby Granite Bay is a 5.0 player and one of the nations best, has 2 training videos available. You can purchase them at the following website.
Pickleball Stuff