If you didn't know however, John Green has this whole other side to him that a lot of readers are unaware of. Besides writing young adult fiction and ardently supporting Liverpool Football Club with his time, he also makes educational videos with his brother Hank that can help a whole range of people, from Literature and Psychology majors, to high school students who need a bit of a refresher for their SAT subject tests in US History, World History, Biology and Chemistry.
Teachers who may not feel like doing a full lecture or need something to give an overview of previous lessons could also find these videos useful.
CrashCourse US History
CrashCourse World History