Thomas Church was a "founding father" in modern landscape design thought. He wrote this book to showcase his ideas about it.
If you have read even a few landscaping books, you will find that most of the ideas expressed will be familiar to you and won't be of much help to design your specific garden. I felt the yard and garden examples in the book were dated (as in 1960s, 1970s, 1980s looking).
Finally, I was disappointed in both the printing and the photo examples. All the pictures were black & white, and they all were rather crudely printed. This made it difficult to see details within the photos.
On the up side, the text is good reading for those seeking to become a landscape designer, be he amatuer or professional. And if you DO want to do "retro" designs, the examples ARE well done.