Kim Lyons is a great total beginner thing.
More the last 4 in the set (green and purple) but it is nice to cruise once thru the blues. Somewhere in there is the starting point for most regardless of age, size or ability.
I agree with previous posters about
http://www.collagevideo.com and their ratings of "levels." They seem to be spot on and when I moved to intermediate I went with Kelly Coffey.
Last thing anyone needs is injury by jumping ahead in levels before they are ready.
A.