Many of the large schools have a campus map available on their website. This can map can take several forms, such as a link to Google Maps, or a proprietary map. They are usually combined with directions to campus and parking information, and are usually found in the "about us" or "directions" section of the school's website.
Some schools, rather than create their own campus map, use Google Maps to do the job for them. These maps are useful for finding physical addresses with a street and number (eg. a courier address), but are not as useful for finding out-of-the-way locations or places with campus-specific names (eg. "campus quadrangle").
Google Maps are useful since they incorporate satellite data and street-level views, so if you are looking for a geographic location, you can use visual clues to verify you are in the correct spot. As well, Google Maps has a "get directions" function, so you can plot a driving (or walking, or public transit) route from A to B.
Proprietary campus maps
These are special maps that have been developed specifically for that school. As such, they are often more useful for finding specific locations within campus that may not appear on the generic Google Maps. Most maps are view-only PDF’s, while others are interactive and searchable.
These maps will usually have all the major locations a student may need to know listed on the side with a legend (eg. A-Z), with the buildings labeled correspondingly A-Z on the map. This allows the map to be uncluttered, which is useful when there are many buildings and locations to include. Commonly-searched amenities such as emergency phones, parking lots, food, bus stops, and disabled access are also labeled. In addition to proprietary maps, several schools will also have accompanying photos of important locations, such as hospitals, libraries, or student union buildings.
Some maps are searchable or interactive, which means you can click on a location you wish to find (eg. "bus stop"), and it will be pointed out on the map, or a new window will open up with more specific information.