(AP) — Dozens of books have already been written about billionaire Warren Buffett investment success, but now a new book explains Buffett’s advice for kids.

The lessons in the book are based on the “Secret Millionaire’s Club” cartoon that features Buffett helping a group of kids learn how to manage the millions they made selling baseball memorabilia they found.

Buffett, who voices his own character in the cartoon, helped the book’s authors decide what to include in “Secret Millionaire’s Club: Warren Buffett’s 26 Secrets to Success in the Business of Life.”

The lessons featured in the book focus on key financial principles and Buffett’s core beliefs, such as the importance of pursuing your passion in life, protecting your reputation, avoiding debt and recovering after mistakes.