Drawing is among the most popular art forms in the world. It is easy to begin – all you need is a writing instrument and paper. There is a wide variety within the art form and you can use many mediums, materials and techniques to draw, depending on the effect you'd like to create.
Wikipedia: Drawing History and background information on drawing.
Pencils.com Blog The PENCILS blog is dedicated to pencils, journals and the stories they tell.
Lines and Colors Blog An art-focused blog that is dedicated to drawing, sketching, painting, comics and pretty much any art form that involves lines and colors.
Daily Sketch Challenge DeviantArt encourages its members to spend 30 minutes doing a sketch and then post their drawings without fear of criticism or critique.
Artists Network Connecting artists with ideas, inspiration and instruction, including fine art instruction, magazines, competitions and free tutorials.