Another wave of survivalism began after the September 11, 2001 attacks and subsequent bombings in Bali, Madrid, and London. This resurgence of interest in survivalism appears to be as strong as the 1970s era focus on the topic. The fear of war, avian influenza, energy shortages, environmental disasters and global climate change, coupled with economic uncertainty, and the apparent vulnerability of humanity after the 2004 Indian Ocean earthquake and tsunami and Hurricane Katrina, has increased interest in survivalism topics.[19]
He points to the cash registers over his left shoulder. “I’ll bet you there’s not one thing you bought today that didn’t use electricity in the transaction,” he says. Before Y2K, Finelli says he owned a small computer manufacturing company and personally upgraded 8,000 operating systems so the dates would roll over from 1999 to 2000. “Because they wouldn’t,” he says. “There was a defect. I know that computer systems are frail because I built them.” He says a widespread power outage would cripple us—no electricity, no trading debt portfolios, no buying wholesale taquitos on credit. 
If you plan on living in the city after a grid-down no-power survival experience, this book is made for you. I, however, will not be waiting around in my apartment in this ghetto neighborhood for somebody to kick my door in while I'm sleeping and I don't have the ability to stand watch 24 hours a day. This book also is very useful if you own a home or are able to beat the vast amount of bums into one after the chaos ensues. It is entirely based upon living around all of the other desperate human beings an everything that comes along with that human nature survival instinct type of situation. Fitting in, trading, cooking, protecting, and all sorts of other very practical methods for making it by. Jim is very, very knowledgeable about surviving in the wake of a catastrophic event. Even if you're like me and plan on being a woodsman, this is a must-read. No matter how you roll the dice, it is a must-read and must-keep. In addition, he provides several referrals to must-read books and resources. Like going on a guided tour and learning how to make use of the wild right outside your front door. I will be doing just that! The main point I think he wants everybody to know is: Do what you can, while you can, before you can't. Again, read this book and take or leave what you will!
What’s the bare minimum you need to navigate across land?  For most people, that would be a compass and map.  A basic road map is sufficient to get a rough approximation of the lay of the land.  More detailed relief maps can help plan for elevation and estimate possible water sources but they also take up more room in your pack.  Waterproofed or laminated maps are also extremely helpful.  Lensatic compasses are the most reliable for little money.  If possible, a compass and protractor are also extremely helpful for route planning.  Obviously, not as essential but nonetheless useful.