Tick anything you already have, in any order. Quests unlock once this is done.
A kit has a frame, motors, stack and props that are known to fit each other. Choosing those separately is the hard part and it is not the fun part.
2 things left above. Quests are real things you go and do, so they only make sense once you have what you need.
First one waiting: Fly a drone simulator until you can hover