I purchased this book because I really wanted to do this program. There ended up being one program online. I quickly purchased a used book and participated virtually for several weeks. I found that the book had been updated. I lost interest in following virtually. I finally decided to finish. I enjoyed the lesson and suggestions for each section. I'm keeping this handy because I find it useful. I felt guilty as I read the assignments for the week and realized I should be farther in my training but my mileage is farther so I have to remember that the important part is the lesson and suggestions.
The training program (and everything you get in the paid membership) is top notch but parts of the actual book have a lot of grammar errors and it isn't as concise as it could be. I think it's just because it's not authored by writers. I enjoyed the program tremendously! It changed my life for the better!
Did this with a small group with my church. I felt this brought our group together and had good discussion questions. The training for a 5k was good, but wish there was an app for android to accompany the book to help with the training.