Over at Vlib.org you will find a virtual library that you can use for free.
This site, which reminds us of Wikipedia, has great user submitted content on a wide variety of topics. You can find everything from Forestry to Religion, so you are sure to find something you want to learn about on the site. The articles on the site are very informative and the information seems to be accurate, so you can use it for research purposes. If you like what the site is doing, and want to help them out, you can donate money through the site. This will allow you to help them build up their funding, in order to provide more and better articles. The site can be viewed in English, Spanish, French and Chinese. This makes it appealing to people from the most populated areas of the world. With all the information found on the site, you are sure to learn something new every time you visit it. 
