"How to Draw Hair tutorial by =ribkaDory on deviantART: by drawing the ends and hairs at hairline close together you can create shading and a sense of form. This will help if you are into drawing people.
"Vertical Landscape" by Eiko Ojala. It looks like a paper landscape but the artist actually works digitally and hand-draws all the elements to look like they're cut out of people. (Hint: the shadows help!
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.