The search below is only a sample. You can delete the text in the search box and perform your own search for books available through Google Books.
Note: Some Google Books are available in full-text, while others only allow a limit preview or publication information only.
These databases will give you full-text free access to published articles (many that are ordinarily behind a paywall):
Lots of pro/con essays and issue overviews here.
Short video tutorials on using databases here: Two-Minute Videos: Video Guides to Help You Use the Library
How to Search with Academic Search Complete: