I started spin class this winter, the effort is way harder (trainer or spin) so it is shorter. If I am training at home I actually like Robbie Ventura's videos. My teammate said Chris Carmichael's are good too. Might try to find them used on Amazon or sale since it is getting out of trainer season for many people.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan