You may really enjoy writing, but do you know how to write a screenplay? Your local community college may provide classes in different types of writing. Enroll in one of these classes. Your best bet is a class in playwriting or screenwriting. You will study the specifics of how to do this type of writing. You will learn where and how to submit your work, how much money to expect your work to bring in, and what organizations you may want to join for support, critiques, and more advice.