It is a large book with a red cover. The book's title is transcribed in large, yellow text with a thin white outline.
Role in episode
The book is first seen after Squidward lectures SpongeBob about following every rule in the book to know how to properly do art after the latter creates a statue. However, Squidward's words cause SpongeBob to leave in tears and it is not until a famous art critic Monty P. Moneybags tells Squidward that the statue is good and wants another.
Squidward then retrieves SpongeBob and tries to get him to properly construct another statue, but SpongeBob keeps referring to The Rules of Art book, thinking Squidward's procedures do not follow it. Squidward then rips up the book and hopes that SpongeBob will construct something unique from it.
However, SpongeBob ends up recreating the rules of art, much to Squidward's horror.