There is an art to casting. And I hope we will see more ensemble films. I don't like star-led films, it's much better to have more stars in one film so that the audience can see them working together.
My mom would give me a piece to play but I wouldn't do any theory because when it came time to do it I would sneak back upstairs and watch TV. So I had these kind of nonchalant lessons for years then it just started soaking in.