Articulo: como aprender a dibujar esquemas- comunicacion efectiva

Dave Gray, the founder of the info-design firm Xplane has a fantastic little
course on sketching on Squidoo:
http://www.squidoo.com/sketching/ It's pretty deep and a lot of fun to read.

It's part of a whole series of articles he's written on visual thinking and
communication:
http://www.squidoo.com/communicationnation

Sketching on Squidoo

Sketching is a module in visual thinking school, a course designed to help you learn how to think and communicate better using the visual part of your brain. In this module you'll work on your drawing and sketching skills.