By Stephen King
On Writing by Stephen King is a great book about the art of writing and the tools of a writer. Less practical than On Writing Well, but packed with great stories. If you’re serious about writing, you should definitely read both.
By William Zinsser
On Writing Well by William Zinsser is the best book for learning how to improve your writing. The advice is both concise and practical. A must-read for anyone that writes regularly and wants to upgrade their writing skill.