Orienteering is the art and sport of finding things with a map and compass. This book talks about navigation concepts, working with a compass and the different types of orienteering including foot orienteering, mountain bike orienteering, trail orienteering, mountain marathons and geocaching, which is a form of digital treasure hunting. Project Webster represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Project Webster continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.