As I mentioned previously, writing a script is different to regular literary writing, thus it requires a particular way of reading it. Scott Mayers describes his way of reading screenplays in a series of blog post here: How To Read A Screenplay: Parts 1–7

Here are the main steps you better to take digging into a script you are reading:

1. The First Pass, go here.
2. The Scene-By-Scene Breakdown, go here.
3. Plotline Points and Sequences, go here.
4. Subplots, Relationships and Character Functions, go here.
5. Metamorphosis, go here.
6. Themes, go here.
7. Style and Language, go here.

Cover image:
https://giphy.com/gifs/coffee-suicide-squad-harley-quinn-Wp0ZtQjgViqR2/