This particular text contains very hard to find information on the inner structure,
presented in a clear, straightforward, concise and comprehensive manner:
included are descriptions of the symbols for, and the actions of, the various
levels of consciousness, chakras, channels and winds and the results of prana movement through the body.
This information is just not easily findable or accessible elsewhere in any one place.
You could even use this information to accurately decipher ancient teaching thankas.
His Holiness has written many books and there is, of necessity I think, a great deal of similar information overlap
amongst them, however he always manages to insert into each work some truly unique gem of information
not readily found elsewhere. It's rather like the old children's visual game of
Find The Precious Objects Hidden Somewhere In This Picture.
These unique additions in the midst of familiar territory are tiny hints
at the profound depth of wisdom inherent in this great teacher. Don't fret over this book's details.
Read it once through whether or not you like it, then just be patient and go back,
and read it again, and yet again, and eventually, you will find it easy.