Upon searching for further information on copright and fair use I came across WOWIO which is a website offering free e-books. It is searchable by catagories and it publishes a top ten listing in each catagory.
There are many excellent sites out there which attempt to teach people cyber safety. One of the best I have found in my recent trawls through the web is netsmartz.org. This site contains a comprehensive listing of information fluency videos each with supporting resources. If you are looking for ways to engage and keep students focussed on internet safety, this is a good place to start!