I pretty much ignore the specific gear recommendations for spinervals. I just go with the general concepts of shift up to a really hard gear, shift down to an easy spinning gear, shift up to a kinda hard gear, etc.
The Spinervals DVD's typically cost $29.95 - you can try preview all the workouts online at www.mypypeline.com/coachtroy. The website has a coupon for one free workout. You can rent videos for as low as $1.75 and own them for $7.49. I'd suggest starting with Iron Girl 1.0 - Spinervals with IronGirl which has three, 30 minute indoor cycling workouts (easy, medium, and hard). There's a coach's note video that accompanies this (free).
YOU ARE AMAZING! Thanks for posting this - I am excited to be able to try them out before commiting $30. THANK YOU!