Art tutorials
Digital Painting
- About digital painting and GIMP, a lot of text at the beginning, but quick and easy tips after halfway: Nataliebeths Tutorial
- Set of easy tutorials about how to draw simple background elements: Artisandwarfs Tutorials
- Colour theory basics with GIMP: http://nataliebeth.deviantart.com/art/The-Big-Colour-Tutorial-426179036
- One way of using colours with GIMP: Lostie815s Tutorial
Pixel art and sprites
- Large pixel art course
- Pixel art from tiles to animating sprites (great examples from games)
- Short collection of tips how to put together a good sprite sheet
- A video about 2D-game tilesets
Diving deeper to art
- From the very basics of digital and traditional painting and drawing to more advanced techniques: CrtlPaint Library