Illustration Resource Links (free)
Here are some links I have collected. If you find them useful please share this page with someone else.
Illustration Link Resources (PDF format 121KB)
Brushes for Photoshop and Corel Painter (paid and free)
I made brushes for Corel Painter using the program for years. They are available in a library all together or as separate category packs on my Gumroad shop. For video previews and painting demos you can check out my YouTube page.
I also have some brushes I made for Photoshop available (version CS3 and up).