Use the CRAAP test to evaluate online resources, checking for currency, relevance, authority, accuracy, and purpose. Search engines have large, constantly growing databases while subject directories contain a limited number of pre-selected webpages on specific topics. When evaluating online resources, consider how the site looks, what information can be learned from it, who created the content, and what ensures the safety of the site. Identifying the purpose of a website's information and distinguishing between .com and .gov domains can aid research.