Suggested Books on Writing*:
Books on Art:
The Artists Way by Julia Cameron.
Comic Books:
Understanding Comics by Scott McCloud (warning: may be unsuitable for children)
Words for Pictures by Brian Michael Bendis
Poetry:
A Poetry Handbook by Mary Oliver
The Haiku Handbook by William J. Higginson
Prose:
The Artful Edit by Susan Bell
The Elements of Style by William Strunk Jr. and E.B. White
The Emotion Thesaurus: A Writer’s Guide to Character Expression by Angela Ackerman & Becca Puglisi
The Negative Trait Thesaurus: A Writer’s Guide to Character Flaws by Angela Ackerman &Becca Puglisi
The Positive Trait Thesaurus: A Writer’s Guide to Character Attributes by Angela Ackerman & Becca Puglisi
On Writing, A Memoir of the Craft by Stephen King
Steering The Craft by Ursula K. LeGuin
Steering The Craft: A 21st Century Guide to Sailing The Sea of Story by Ursula K. LeGuin
The New Well-Tempered Sentence: A Punctuation Handbook for the Innocent, the Eager, and the Doomed by Karen Elizabeth Gordon
The Transitive Vampire: A Punctuation Handbook for the Innocent, the Eager, and the Doomed by Karen Elizabeth Gordon
Wired For Story by Lisa Cron
*These are my suggestions; you'll have to find what books work best for you and which ones you resonate with.