Tick anything you already have, in any order. Quests unlock once this is done.
The kit has the fermenter, siphon, hydrometer and wand in one box for less than buying any three separately. Skip the big kettle, that is for all grain brewing later.
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: Brew a beer from an extract kit