Download a free copy of the official Yosemite National Park map before your Yosemite vacation. This Yosemite map shows most major park roads with notes about seasonal closings. You can also see an overview of the main hiking trails, but be sure to pick up an actual trail map before you head out into the backcountry. Campgrounds and picnic areas are highlighted with icons. Want to know what mountain peaks you are seeing from the park? Those are notated too, along with rivers and lakes. You'll find all five major entrance stations notated. A couple of entrances have limited hours or seasons.
Hungry? Look for the restaurant icon. Most restaurants are located in Yosemite Valley so you may want to download the Yosemite Valley detail map in addition to the main map.