Have Colorado’s 54 fourteeners and other high peaks been luring you, but you don’t quite know how to prepare? As part of its ongoing FREE workshops and clinics, REI’s Boulder store’s presentation this evening, August 4, 7 p.m., covers such basic essentials as training, food, hydration, equipment, weather and safety considerations. 1789 28th St. (north of Canyon), Boulder; 303-583-9970.