Originally Posted by rule
That would likely be Joe Friel's The Cyclist's Training Bible.
Last week, I spent an hour browsing through all the bike training books at Borders. I ended up buying this book. I'm on page 33 of 260+. So far it is all definitions and theory. I was afraid this book is too focused on theory and what the basis of a good workout is without giving enough workout plans.
So, I also bought The Heart Rate Monitor Book for Outdoor and Indoor Cyclists: A Heart Zone Training Program
by the authors Sally Edwards and Sally Reed. This book has some theory in the early chapters but also has over 50 different workout plans, one for each week in the year.
I think I bought both books for less than $30 total. I think The Cyclist's Training Bible
will teach you the general what, how and why to exercise a certain way while The Heart Rate Monitor Book for Outdoor and Indoor Cyclists: A Heart Zone Training Program
will show 50+ precise workouts for you to follow.
If you can, flip through both books at your local bookstore (I found these books at Borders) and see which one you like better (or buy both like I did). Hope this helps.