Volume 1: The Basics is appropriate for students just beginning in math contests, while Volume 2: and Beyond is for more advanced students. Both books feature hundreds of problems from actual math competitions, such as the American Mathematics Competitions (AMC), the American Invitational Mathematics Examination (AIME), the United States of America Mathematical Olympiad (USAMO), the Mandelbrot Competition, and the International Mathematical Olympiad (IMO; official website here).

Although the books discuss many topics that occur frequently in math contests (and, perhaps, in problem solving in general), they are not just a collection of tricks. Instead, the books teach students to learn and understand methods, which allows them to solve a wide variety of problems beyond the types presented in the books.

The Art of Problem Solving is now also a website. It features many resources for students and teachers interested in math, including:

- an online forum for students and instructors to discuss topics in problem solving, as well as share and solve math problems.

- free "Math Jams", called this because they are improvisational problem solving sessions guided by Art of Problem Solving instructors.

- inexpensive online classes covering a variety of mathematical topics, including algebra, combinatorics, geometry, inequalities, and number theory. The classes include 18-24 hours of interactive classes, challenge sets, and extra practice problems.