Google Scholar - Pros and Cons
Google Scholar
"Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. Google Scholar helps you find relevant work across the world of scholarly research."
From About Google Scholar, https://scholar.google.com/intl/en/scholar/about.html
Google Scholar LibGuide
A guide on Google Scholar, including pros and cons..