Kinshuk, thanks for the suggestion. I wish I had more time as it is a fascinating subject: the transition from script to screen. I'm just too busy right now. Maybe next year.
One thing you can do on your own: Read a movie script while watching the movie. Use your *own* imagination to reflect on why the filmmakers made the changes they did from script to screen.
Speaking of which, there are over 100 articles in my Script To Screen series. That would be a good place to start.