The 7 Habits of Highly Effective Teens by 
This site links to hundreds of other sites concerning study skills - from getting ready to study to taking tests and test anxiety.
This site provides study guides and strategies in different languages.
Ristic, Nebojsa. “Get Motivated – BBC Brainsmart Series.” Online Video Clip.
YouTube. YouTube. 4 Aug 2010. Web. 18 Oct 2015.
Crash Course Videos on YouTube
These short video clips, on a wide range of subjects, from literature to chemistry, are good introductory study guides.