These books cover the basics of drawing and steps to follow for improving the basic skills involved.  These books are for any skill level, filled with extremely useful information and exercises to help learn control of the tools, dexterity, and concepts for putting images together.

Click To Buy – Drawing from Observation: An Introduction to Perceptual Drawing

by Brian Curtis

The Book in Three Sentences:  Brian Curtis’s book is a wealth of information on the craft of drawing in dry media, complete with hundreds of explanations and exercises to go along with them.  The book begins with simple exercises learning to define shape, then advances into form and rendering before he introduces composing and perspective, both older and more modern shorthand approaches.  It takes a very straight forward, clinical approach to the fundamentals stripping away any subjective theory or nonsense that can sometimes make drawing more mystical and talent based than it really is.