I don’t want this blog to turn into nothing but off-site links, but this was too good to pass up. It’s not easy to find good photoshop tutorials. Searches usually turn up lots of 1st-day-beginner stuff and photo touch-ups), but the lines and color blog just posted a link to this:

100 Photoshop Tutorials for creating beautiful art.

I saw this post on the DrawingBoard.org

Renaissance Style Drawing (Sanguine) — A Tutorial (images above are from here)

“If you have read books on Renaissance-era drawing, you may have noticed the media listed as sanguine. Sanguine is a natural mineral, hematite, or basically a rusty rock. They didn’t have Conté crayons or pastel pencils in the 1500s, so this is what they used.”

Edit: the lines and colors blog tracked the author back to KM Scott Moore.