You can get them here on Sherdog, or go to
www.basrutten.tv
Basically, it's 4 cd's and 1 instructional DVD that just shows you the basics.
You can do them pretty much everyday if you want (if you can).
They have a Boxing, Thai Boxing, All Around Fighting, and All Around Workout.
They have 2 parts on each disk, 2 minute rounds, and three minute rounds each with 1 minute break in between.
No weight lifting is involved but it will definately improve your stamina and punching power.
In the all around workout, Bas has you doing push ups, abs, sprawls, and much more.
Trust me, its worth it.