There are videos at ispindle.com
and IIRC they're all (or almost all) done on a top whorl spindle. Though top or bottom whorl, the drafting methods are the same.
I definitely agree that if you can't get the hang of it right away, try to park and draft. That way, you get the hang of drafting without worrying about the spindle spinning the other way and dropping, it'll click and you can do it while the spindle is turning no problem.