Model appropriate social behavior.
Post clear rules of classroom behavior and review them frequently, especially before a new activity.
Seat student near quiet students.
Use a behavior-modification program with clear goals and planned rewards for reinforcement.
An excellent website for more advice about specific behavioral concerns comes out of the Hunter College Special Education Program. You can send a question about a particular behavior and elicit a multitude of suggestions geared to your immediate needs.
As for books and videos, have a look at Thomas W. Phelan's book (and accompanying video) Surviving Your Adolescents: How to Manage and Let Go Of Your 13-18 Year Olds. Another useful video on this topic is Managing Oppositional Youth: Effective, Practical Strategies for Managing the Behavior of Hard to Manage Kids and Teens by Arthur L. Robin, Ph.D. and Sharon K. Weiss, M.Ed. An excellent all-around guide for understanding issues specific to teenagers with ADHD is Harvey C. Parker's Put Yourself in Their Shoes: Understanding Teenagers with Attention Deficit Hyperactivity Disorder. This book includes over 200 educational accommodations for ADHD teenagers.
Once you've managed the behaviors that are getting in the way of your son's success in school, have a look at Leslie Davis, Sandi Sirotowitz, and Harvey C. Parker's excellent guide, Study Strategies Made Easy: A Practical Plan for School Success. This is an excellent guide for strategies on organizational skills, time management, improving reading comprehension, vocabulary development, test-taking skills, memorization, and communication. You have quite a bit of summer reading ahead of you! Good luck!