Might not be the book can be put into immediate use, but definitely bring your understanding of memory management to another level, the author has a gift to make complex topic easy to grasp, for example, "Siege Warfare" is used in the case study of Linux to demonstrate memory protection.

Where source code is used like the manual memory manager, it's always kept
as simple as possible, I appreciate Bill made effort for the reader to "get it" instead of impressing them with syntactic acrobatics.

The quotes from the first three chapters are:

"Everyone has a photographic memory. Some people just don't have film."
-- Mel Brooks
"If I could remember the names of all these particles, I'd be a botanist."
-- Enrico Fermi
"My problem is that I have been persecuted by an integer."
-- George A. Miller

The author runs out of quote from chapter 4, even thouth, the book still worth a five star given the enlightenment and fun I got from reading, by the way, the author never loses humor even handling the driest topic, makes technical reading an entertainment.

The closing quotes at the last page of the book sounds rather like a prophets:

"We are the middle children of history, raised by television to believe that someday we'll be millionaires and movie stars and rock stars, but we won't."

-- Tyler Durden

"In time, you will come to regard me with not only awe and respect, but love."

-- Colossus, speaking to Charles Forbin in Colossus: The Forbin Project (1969)