I saw it and read through it at the bethel family library in my assigment in Latin America.
It's in English. It's blue, in a three-ring binder with the WT logo on it and the numbering of the pages is hyphenated, like chapter 3-21, so they add more pages occasionally and update.
It has everything in there that a branch needs basically, like how circuits and districts are organized, how the branch is organized, how correspondence with New York should be handled.
One thing I remember is that it says circuit overseers should be a minimum of 25 years old before the branch recommends them to the Governing Body. (Elders and servants are appointed by the local branch) The book said something like, "Youthful enthusiasm and energy are not the primary qualities a branch should look for in a brother. Rather, a seasoned elder with experience who is also a pioneer." It also says if a brother is younger than 25, they should attach a letter stating why they are recommending him.
BF