The National Center for Health, Physical Activity and Disabilities (NCHPAD) has a series of on-line video you might find interesting:
Meet Mary Allison Cook. She is a wife, professional, and 8 time member of the US Women's Wheelchair Basketball Team. With 23 years of experience as a wheelchair user, Mary Allison will answer all of your questions and more through this series of videos. This series will give wheelchair users tips and tricks on how to conquer the world with confidence, ease and style.
You can find them on the NCHPAD youtube channel or go to http://www.youtube.com/watch?v=Xc1aDJgdzzk&list=PLwMObYmlSHaM3I...
OR as one of the videos on their webpage at http://www.nchpad.org/Individuals~Caregivers