Common way to make a GameTutorial?

Hey there!
As the title says I want to make a “Instruction” or “Tutorial” when the game begins, but I am not quite sure how to do this.
Is there a common way? Should I use just animations, just scripts?

I know the question is not very precise, feel free to ask me any further information!
Thank you in advance!

You could check the old flash games. I remember the early 2000’s when the flash game spree was on the height, almost every game had the Instructions button under the Play. Though the instructions varied, most had images along with text telling how to play. I suggest just to think of the easiest way of telling people how to play without a lot of text.