Salam my dear friend,

I started with Complete bellydance guide, and if one really really aims at executing the moves as precisely as she does it is months and months of training :))
Next for me will be Ultimate bellydance guide by Sadie - her Thrillin Drillin and Pops Locks Shimmies are more difficult than the Ultimate Bellydance guide. If you want to start with thrillin drillin or Pops Locks Shimmies, I would start with doing the first half hour or so, and that varied one day complete bellydance guide, one day first 30 or 40 min of thrillin drillin and third day 30 min of pops locks shimmies. You will see what you can do, and what you have to work on.

HEr ultimate bellydance guide is definitely good to get, it is challenging but less difficult than some of the other ones!

:)))