Basics of writing a script

The font you should use is: Courier New, size 12

at the very beginning you put

FADE IN:

and at the very end, you put

FADE OUT

THE END (the end is optional)

For each new scene, with each new setting, you put INT. if it's inside (interior) and EXT. if it's outside (exterior).

Then you put the place of setting: EXT. BEACH

INT. ANNA'S ROOM

you can also do stuff like this to explain the part of the house:

INT. MARK'S HOUSE - KITCHEN

and mostly you can set up what time of day it is.

INT. MARK'S HOUSE - KITCHEN - DAY / MORNING/ EVENING (mainly it's just day or night)

sometimes if it's still day you can do:

INT. MARK'S HOUSE - UPSTAIRS ATTIC - CONTINUOUS

it depends. as long as you tell them where the setting is, then in the description you don't have to say:

Mark and Anna are upstairs in the attic.

You can cut to exactly what they're doing: Mark and Anna are fiddling with a mysterious box.