What are they? Computer programs that search documents, especially on the World Wide Web, for a specified word or words and provide a list of documents in which they are found. Google, Bing and Yahoo! Search are among the most popular. See leading technology information and advice website Lifewire's The Best Search Engines of 2020 for more.
Limit your search to domains that are considered to be more reliable by combining your search term(s) with the phrase site:gov OR site:edu which will limit your results to the domain .gov (websites originating from the U.S. government) and the domain .edu for educational institutions in the U.S. Note: be aware that universities may allow their students to use their edu domain. If there is a tilde (~) in the address, it may be a personal student page which is not monitored by the institution.
What are they? Also known as web directories, these lead users to websites selected and reviewed by scholars, librarians, and teachers, and organized by subjects.
Wikipedia's general disclaimer: "Wikipedia cannot guarantee the validity of the information found here. The content of any given article may recently have been changed, vandalized or altered by someone whose opinion does not correspond with the state of knowledge in the relevant fields."
Ask yourself the following questions to determine the reliability of a website:
What type of organization is behind it? Look at the domain: