I have been running in a quite structured way for 11 years but have had problems with injuries for quite some time, especially when the mileage tends to get high, approx. 60 miles.
My running technique has always been bad being a heel striker. Therefore, I have the last couple of years tried to have a more midfoot strike but still with some problems.
I really like Brian's book because it focuses on my big weakness which is really explained in the book; bad use of the butt and hamstring during runs. Being more focused on this and doing some of the suggested exercises will beyond any doubt help.
It is also really excellent that besides having the e-book, you get loads of extra information on the website. Fantastic value for the money!