Books transmit a wealth of information, and they are indispensable for outdoor enthusiasts of all types. Whether you need some technical guidance regarding your mountaineering training or a reference guide to help you find new trails, you can probably find the information you need in a book. You can find books filled with avalanche advice, rock climbing how-to guides, weather forecasting guides, geology information, skiing tips and lists of outstanding trails. Books are also obligatory for off-the grid adventures where wi-fi and phones may not work. Unparalleled publishers in these areas include Alpenbooks, Falcon Press, Climbing, Transworld, Global Pequot Press, Sharp End Publishing and Mountaineers Books.