whats the best way to learn the clean/power clean???
with a barbell and weights
Practice, practice, practice and more practice.
And online videos do help.
find a coach in your area!
these videos really helped me visualize what i'm supposed to be doing. especially with the whole idea of "staying over the bar" for as long as possible and other crucial details. still having trouble with them myself but if you can, obviously, just talk to an experienced/knowledgeable trainer.
Learn from the top down. The California Strength website has some good videos
front squat... then get used to dropping @ free fall speed in a front squat