I have logged my hr, speed, distance, effort, time, route, and dogs encountered for about 3 years. It's getting old logging in...60 miles, avg. speed 17.7, avg. hr. 153, felt good, Blah, Blah, Blah. I would like to get into power training to maximize my limited time on the bike and be able to set goals and training plans for upcoming events that I will be doing. Is there a book or other resource to help me get started.