The Scout uses the Ranger’s skills to serve as both a guide and the advanced eyes and ears for a group. Scouts learn to use their abilities to aide their allies while traveling, particularly when in their favored terrain. They do not spend their time focusing on a specific type of enemy, but learn to deal with the enemy at hand. The Scout uses the rules for the Guide Archetype from the Advanced Player’s Guide (pg. 125).
See: Pathfinder SRD-Guide