Photo Credit: Elliott Brown via Flickr
Google Books will provide you with partial access to many books published in the last few decades and full access to certain titles that are in the public domain.
It's a good way to get a sense if the book(s) you are interested in are actually useful.
If you do find something in Google Books that you like and want to see the actual book, you can always request it free of charge from Library Services through interlibrary loan.
A streaming video service that provides users with access to hundreds of videos related to the Humanities and Social Sciences. Users can watch, mark, and share videos.