Fast Sketching Techniques

5-Minute Sketching -- People: Super-quick Techniques for Amazing Drawings

Pen and Ink Drawing: A Simple Guide

The Exceptionally Simple Theory of Sketching: Easy to Follow Tips and Tricks to Make your Sketches Look Beautiful

Sketching People: An Urban Sketcher’s Manual to Drawing Figures and Faces

Sketching People: Life Drawing Basics

5-Minute Sketching -- Architecture: Super-quick Techniques for Amazing Drawings

How to Sketch: A Beginner's Guide to Sketching Techniques, Including Step By Step Exercises, Tips and Tricks

The Urban Sketcher: Techniques for Seeing and Drawing on Location

Keys to Drawing

Artist's Sketchbook: Exercises and Techniques for Sketching on the Spot