When considering the shape of your light, it's essential to remember that the absence of light is just as important as the prevalence of light.
We want to choose where shadows fall and what shapes they take.
Cinematic Lighting Techniques to Make Your Film Subjects Look Great
Cinematic Lighting 101 How to Light Faces
Notes on Lighting - Sinister Pictures
Film Lighting — The Ultimate Guide (w/ Video & Cheatsheet)
How lighting affects the mood of films, by Jameses Tech, Age of Awareness
Film Lighting Types Every Filmmaker Needs to Know
How to Shade Drawings: Tips & Techniques for Beginners
Portrait Lighting Setup Guide — 8 Ways to Shoot Great Portraits
How to Shade a Drawing (Light & Shadow : Part 2 of 3)
Film Lighting Basics: 6 Ways to Shape Your Light (and Shadows) — Zacuto