"One eye sees - the other feels" - Paul Klee
Techniques
Designing with shapes:
Shapes in Illustrator (video)
Combining objects in Illustrator
Duplicate objects around circle
Type
type-on path
Creating-type-path (Illustrator)
Combining type with graphics
Color:
Illustrator fundamentals: apply-color.
Patterns:
repeating-patterns-using-illustrator 1
repeating-patterns-using-illustrator 2
Trace
Drawing vectors
Drawing simple lines and shapes
Drawing with the pen tool in Illustrator 1 | 2 | 3
texture:
Texture + type (Illustrator)
Texture + type (Photoshop)
Texture + type2(Photoshop)