Red Sox Kid Nation is back and better than ever! Register the young Red Sox fan in your life for membership in the official kids’ fan club of the Boston Red Sox – the best way for kids to show their Red Sox pride. As a thank you to the best fans in baseball, we’re again extending our free ticket offer to all members, while supplies last. There are two ways to join: register for a FREE Rookie membership, or step up your game and get exclusive merchandise and benefits with an All-Star membership.