Fundamentals of Search and Rescue (FUNSAR) is the only resource that covers Search and Rescue Technician (SARTECH) III & II requirements.
Providing an overview of all aspects of search and rescue procedures and equipment, FUNSAR teaches the essential techniques employed by nearly all search and rescue personnel. FUNSAR offers an in-depth and practical approach to search and rescue and is recommended for all emergency responders. Ideal for both paid and unpaid professionals, this resource is recommended for any person who functions on search and rescue missions as a field searcher. FUNSAR offers an excellent mix of photos and illustrations, pullout boxes, key terms, survival methods, and numerous forms and checklists.
This is a good overall introduction to Search and Rescue with just enough information to be useful, but generally not enough to get too bogged down in minutiae. I thought the chapter on Search and Rescue clothing was really good, clear and concise on the concept of layering and how it applies in SAR. Another excellent chapter was the one discussing SAR hazards like exposure to the cold and/or heat and various other things that are out their trying to kill the unsuspecting SAR member.
The book bogs down a little in chapters like "The Legal Aspect of SAR," probably necessary, but quite boring unless you're a budding lawyer. The first couple of chapters on SAR organization and function are definitely for admin geeks only, but the rest of the book is very useful.