Tick anything you already have, in any order. Quests unlock once this is done.
Rotating means you can go alone, which most people need to. It also makes you a better dancer, because you stop relying on one partner's habits.
Find a ballroom class2 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: Take a beginner ballroom class