I have a good suggestion to every person who asks this question, and that is to get a copy of "Barefoot Running, the Movie!"
The movie summarizes the major points and techniques of barefoot running as taught by Michael Sandler. Sandler is the author of the best-selling book, Barefoot Running (Random House 2011), and co-authored (with Jessica Lee Sandler) Barefoot Walking (Random House 2013).
The movie is a very fun documentary that weaves great stories of Michael and Jessica's personal stories in with the running techniques, which Michael demonstrates live while he explains them. The explanations are well complimented by excellent running footage.
The added bonus is seeing barefoot runners in action amidst the stunning scenery of Maui, where the movie was filmed.