There are two parts to this book.
The first is the Introduction which is only 16 or so pages long. But in these pages is as good a summary of what's going on as I have ever seen. The opening sentence: 'We live in an age of converging crises.'
I've never heard it put better. Global Warming, freshwater, fishing, destruction of topsoil, all are headed our way. Our politicians ignore it, they are much more concerned about a non-binding resolution about Iraq.
I've likewise never seen the description of the inadequacy of renewables described as well in as few pages. The introduction alone is worth the price of the book.
After that the book is on what it will take to survive after the 'Grid' crashes. No electricity, no fuel, no food. Here is how to process your own water, how to grow your food and cook it without using your gas/electric stove.
What he doesn't mention is that without oil, and with a true grid crash, the population of the world has to go back down to what it was before oil, say about the year 1900. And the population then was perhaps 1/4 what it is now.