A brush set that I made which has most of the stuff I ever use (when I don't gradient shade with the pen tool.) No credit required, just fav and/or use. C:
Sketch Brush - Use on 50% flow for best results.
Filling In/Coloring Brush - Made to be super smooth. Use at 80-100% flow. ;D
Lineart Brush - For use with pen tool with "Simulate Pressure" on.
Shading Brush - Set the BRUSH blending mode to Multiply and flow to 5%. Paint with the same or a slightly brighter color as base. Can also be used for softer highlights and with smudge tool. C:
Highlight Brush - Set BRUSH blending mode to screen and flow to 5%. Paint with darker less saturated color than base.
Hair Brush - Set blending mode of brush to overlay or multiply depending on color. Also, you can change the fade of the Size and Flow Jitter depending on how long you want your hair.) Also effective with Burn Tool.
"Wavy" Hair Brush - Same as the other hair brush, but with a slight angle jitter to make it a bit messier.)