Tick anything you already have, in any order. Quests unlock once this is done.
The jigger is the one that changes your drinks. Cocktails are ratios, and free-pouring is why the same recipe tastes different every time you make it.
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: Make the same cocktail shaken and stirred, and taste the difference