Are You Ready? An In-depth Guide to Citizen Preparedness is comprehensive 204-page document from the US Federal Emergency Management Agency. It covers different types of disasters (natural hazards, technological hazards, terrorism) and provides plenty of advice and checklists on preparing your own emergency plan.
For a government document, this guide is well laid-out and easy to follow. I definitely would recommend reading through the document at least once – after all, most probably it’s your tax dollars at work! The full document (in PDF format) is 21MB in size, and there’s also a standalone download for the family communications plan (1.5MB).