Whether you're just starting out or already well-versed in fitness lore; whether you work out alone or with a partner or trainer; "knowledge is power" (Francis Bacon), and these are some of the most interesting fact-filled books and video in my personal library, which I urge you to read or watch and think over for yourself. Click for a thorough review, with all the pros and cons discussed!

A Practical Approach to Strength Training, 3rd Edition
Matt Brzycki

Strength Training Anatomy, 2nd Edition
Frederic Delavier

Women's Strength Training Anatomy
Frederic Delavier

The Bodybuilder's Nutrition Book
Franco Columbu

Nutrient Timing
John Ivy, Robert Portman

Stretching Anatomy
Arnold G. Nelson, Jouko Kokkonen, Jason M. MacAlexander

The Anatomy of Stretching
Brad Walker

Lore of Running, 4th Edition
Timothy D. Noakes, M.D.

Here are books focused on the business aspects of being a personal fitness trainer.

Becoming A Personal Trainer for Dummies
Melyssa St. Michael, Linda Formichelli

These are books for those of you thinking about your own websites.

Head First HTML & CSS

Head First JavaScript

Head First PHP

The Book of JavaScript, 2nd Edition

The Book of Inkscape

Building Powerful and Robust Websites with Drupal 6
David Mercer

Here are DVDs which

Pumping Iron

Marathon

Run, Fat Boy, Run

Understanding Drupal

Finally, here are my opinions of the magazines and journals I've followed through the years.

Wellness Letter, UC Berkeley

Milo

Runner's World

Powerlifting USA

Muscle & Fitness

Muscle Mag International

Muscular Development