For online access to information on a variety of topics, check out Credo Reference and Oxford Music Online. The information they contain comes from well-known sources, and both are available online!
Books, encyclopedias, and other resources are a great place to get an overview of unfamiliar topics or to find new information in a concise format.
Often, you'll be able to find what you need in a single chapter, rather than reading an entire book. Use the Table of Contents or the Index (in the back) to locate relevant pages/sections on which to focus your attention.
Start with one or two keywords, adding quotation marks ("") around concepts with more than one word: for example, "middle school" or "autism spectrum disorder"... quotes are not needed for single words, such as education or science.
Narrow your results using the limits on the right side of the results page. You may see a lot of non-book items, so be sure to limit the Resource Type category to Books, if that's what you're looking for.
When you've found a book (or ebook!) that looks interesting, click the title to learn more about it, or (if it's Available), write down the location and call number and head to the shelves to get it!
If you see 'Available Online', the book or media is available online!
For a broad overview of different genres or topics, encyclopedias can be a great starting point. In addition to Credo Reference, check out this series in the Library: