There are so many bad backs, and so many ways of tackling the problem. What marks this book out is that it works! The 8 steps are described in 8 chapters showing simple effective ways to stand, sit, lie down and walk in a back friendly way. Numerous pictures and diagrams make understanding the text easy, and the book a pleasure to read and refer to again and again.
The approach taken is based on observing people in cultures where back pain is virtually unheard of. This results in an approach that might not be exactly the same as you've encountered before, but from personal experience I know how effective it is. If you want to get a flavour of the Gokhale method try looking on youtube for a video of Esther teaching. Give it a go, and if you like it, do buy the book.