Another book that I found to be very helpful is "Smooth Riding The Pridmore Way" Advanced Motorcycle Skills through Confidence and Control. Reg Pridmore writes a lot about his riding history, but also provides proven methods of riding that I have used. Being a fairly new rider, with only 9,000 miles under my belt, his methods have helped me a great amount. I use his tight corning line and it has saved my butt when cagers have crossed the double yellow on a very twisty road. Using two fingers on the throttle and two on the brake lever along with two on the clutch lever and two on the grip have really smoothed up my riding.
Dave