Tick anything you already have, in any order. Quests unlock once this is done.
A lake or a slow river on a windless day. Waves ruin skips, and a beach with sand and no flat stones will just be frustrating.
Find one near you2 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: Get a stone to skip at all