Whatever the level of experience of the original poster, when I make a tutorial I always try (but not always succeed) to put as much info as I can for the beginners.
No, I didn’t start to work on a tutorial yet. If @mujeeb asks for one, chances are I won’t have time today. Maybe tomorrow.
Agreed. A 2x2 grid is almost essential for that kind of editing.
Also, adding the Size, Position & Rotate filters on the track heads (instead of the clips) will save you time.