This book contains incredibly detailed information on connecting your RV to the Internet and cell phone service in remote areas. I gave it 5 stars because it's a great book if you fit its intended audience, which is people who are highly motivated to have good connections to the Internet and cell service in very remote locations, for example, people who work from their RVs. For the rest of us, I think we'll be pretty much happy not having connectivity for a few days, if necessary, rather than spend hundreds of dollars and hours of set up for solutions that the authors concede might not even work. For emergencies, we'll just try not to get too isolated. Instead of carrying phones from multiple carriers hoping one might work, we'll stay close to other people who probably have phones from other carriers. Even if you can't put its information to practical usage, it's still interesting to know, for example, the technical underpinnings of why some phones only work with certain carriers.