Google Scholar is a search engine that allows users to search through scholarly journals, books, legal documents, professional societies, and university websites. It filters out most non-accredited sources and allows viewing of full or partial publications from reliable sources. Google Scholar provides advanced search capabilities and offers the potential for accessing free articles from anywhere while also allowing teachers to preview books before purchasing them. However, not everything available is free and it does not provide detailed summaries of searched sources, with results being of mixed quality.