I wish you the best of luck, but please know that for a lot of us time is money and also literally our most invaluable / irreplaceable asset, and also tech startups who want us to make a bet on them need to have some sort of value proposition given the risk of "you might die or disapear or be aqui-hired in three months after we moved" so I would encourage to not answering this as your 1).
To me the instinctive reaction is "it's for when you will have time to fool around and figure it out by yourself". It is my opinion only, it's worth nothing more than that, and I realize you didn't ask for it, but I just wanted to let you know.