Lynda.com has agreements with many colleges and universities around the world to let the students use their resources for free. In addition to that, if you live in GTA in Ontario, you can take free public library card in your city and use their contents for free. I guess it might be available in other public libraries around the world and you just need to ask from your librarian about it.
For example, if you live in Toronto, you can get your free public library card anywhere in the city by showing an ID such as your driver license that shows you are a resident. Now, by having your Library Card Number and Library Card PIN number, you have access all the courses on Lynda.com for free. Please take a look at this page that shows Lynda.com as one of the resources you can use.