Writing your script is the actual fun part. But, just like any form of writing, you have to know where you’re going first and you need to set the directions in order not to get lost. Organization is very vital and essential. That’s where a script outline comes into actual reality and play. Understanding your central character’s desire, and capturing the scenarios they attract for themselves, should guide that process through constructive writing organization.
There is no one way to learn how to outline a screenplay because ideas from one person to another differentiate and their are hundreds of concepts.
To learn how to outline a proper screenplay, you must start with a basic plot trajectory. And this can only come from understanding the desires of your protagonist. Only when you start understanding the protagonist, you will be mastering the outline one step at a time.
Think about what your character wants, and what progression of increasingly-difficult obstacles (and people) he or she will organically attract.