Good use of search terms in order to find what you need is essential. Below is the link to Google's primer on how to get the most from the engine.
Google's PrimerTips and TricksAdvanced SearchingInfographic Fun!Google Books is an enormous digitised library filled with a wide variety of books. They are available for free and therefore it is a worthwhile place to go looking for information.
Google BooksGoogle Scholar is similar to Books, except that it contatins a vast library of academic articles instead.
Google Scholar