* Formerly America's National Parks For Dummies, this guide now focuses exclusively on the most popular parks in the system-those west of the Mississippi * Covers Arches, Death Valley, Grand Canyon, Grand Teton, Mount Rainer, Olympic, Sequoia/King's Canyon, Yellowstone, Yosemite, and Zion * 65 percent of Americans surveyed said they had taken a trip of 50 miles or more in the last year to visit a state or national park or forest