2D Design Notes is published online by Jim Saw a painter and educator. The site covers fundamental design concepts such as shape, line, space, texture, value, and color, with supporting illustrations and examples. Jim Saw describes it as
This site should be useful to anyone who wants to know the fundamental concepts for designing two-dimensional artwork. The theory is straight forward and stripped to essentials. The assignments can be done by anyone to reinforce their understanding of the ideas covered in the text.