Tutorial - Curves on Girls by *Ai-Bee on deviantART. Reaaaal good tut on different body types. In her deviant there is also a lot of links to others tutorials for men and women body types. If you draw characters, go see this.
I needed this. I don't really like the patronizing from the beginning but it does good in showing the flaws one makes often and more importantly guide us in the way to correct them. Observe and practice. Nsio explains: Foreshortening by Nsio