To make the most of Marc Brunet’s free content, you need to treat it like a real school.
On his DeviantArt and Cubebrush blog, Marc released a famous "One Year Plan" PDF for free. This includes daily warm-ups: boxes in perspective, cylinders, and texture spheres. If you do this warm-up for 6 months, your hand-eye coordination will rival second-year art students. marc brunet art school free best