If you're new to the world of Udemy (and you won't be for long), this free leadership course might just be the place to get your feet wet. It works on the principle of case studies (as do many Harvard Business School classes). You'll look at the leadership styles of the guys that got it right; think Bill Gates and David Beckham. And yes, that's right, it is free.
Why is this class free? According to the course's website, "Roshan Thiran is the Founder and CEO of Leaderonomics, a social enterprise dedicated to providing access to leadership development to everyone of all ages." The fact that he's won business awards for his work should tell you not to pass this one by - especially if you prefer learning through examples. Try it now. What's the risk?