The information is often specific to a particular university . The information you find on university pages, unless you're looking for research done by a particular department at that university, is often specific to that university. Instructors and departments often build sites specific to their classes or class offerings. While you can still find some useful information on these sites, keep in mind that for general topics, you probably won't find much of interest. Seek out the library .
Most universities have links to their library page directly on their main page.
Trust your instincts. Government sites usually contain reliable information, so you don't have to do as much evaluation of the information if you do decide to check out the .gov sites. The information on these sites, for the most part, is reliable, but less tightly regulated than the .gov sites. Your primary concern when evaluating whether to visit an organizational site, like with government sites, should be the relevance of the organization to the topic you're researching. However, some organizations, particularly those which may not be well known, may value promotion over accuracy and should be reviewed carefully should you choose to use them in your research.