I am a strong proponent of students having many different ways to enrich, and advance their learning. Here are a number of sites that are EXTREMELY helpful, and fascinating.
1. here to go to a neat site called the CIA: The World Factbook. I know - how neat is the title of that site. One can point and click to discover the history, geography, etc for over 250+ countries.
2. here to go to a neat site called Project Gutenberg. This site offers FREE (what a glorious word), FREE e-books. All the books listed on the site are in the public domain.
3. here to go to the site Academic Earth. It is a free online site that has lectures tailored to students in either high school, college or graduate school.