Art books I recommend for traditional & digital artist that you can keep in your artists library.

Every artist needs a manual on art materials and how to handle them by Angela Gair .

If you want to know how draw the human figure Andrew Loomis is the man.

Another great artist to learn how to draw the head & figure is by Jack Hamm

If  you need to draw animals this a great book by Jack Hamm.

Drawing the figure in perspective this is the book by artist Burne Hogarth.

Want to know how to light & shadow a figure.

A must have for comic book artist.

This book gives you tricks and techniques by professional illustrators by author Jill Bossert

The business of being an artist.

How to market and sell your artwork.

One book I have not mention is an book on Anatomy this book is arbitrary for each artist.