zumba for beginners by Linda Edler (1,2 &3 and zumba instructions):
http://www.youtube.com/watch?v=qa2IWYs3ags
http://www.youtube.com/watch?v=afPfWEJSnvM
http://www.youtube.com/watch?v=fu_r4_YmLWM
http://www.youtube.com/watch?v=B-biWE5CahQ
Latin Dance Aerobic Workout
http://www.youtube.com/watch?v=y9raJrc-X9k
Core Rhythms Full Workout
http://www.youtube.com/watch?v=lT09bryb0C4