When barreling over defenders at Paulson Stadium, legendary Georgia Southern running back Adrian Peterson made it clear he was giving his all. What fans didn’t see, Peterson said, was hard work on backfields, at libraries and in classrooms that paved his way to breaking NCAA rushing records and earning a life-long goal of playing in the National Football League. So now, he’s telling them.On Wednesday, Peterson kicked off a signing tour to promote his new autobiography, “Don’t Dis My Abilities” — about overcoming a speech impediment to accomplish his dreams — with a speaking engagement at the Boys & Girls Club of Bulloch County.