itch.io

I don't know why you're getting downvoted - it's a fair question. The answer is no, not really... your best bet is the Corrupted Kingdoms Wiki, but it's run by fans in their spare time so it's not complete.

I will say, however, that you don't need to worry about "messing something up" - the game doesn't punish you for doing what you want to do in the order you want to do it, so feel free to explore and experiment!

Annie milking scene is in Act Two, on a particular day when she's not in the farm. If you go to the farm and there's no Annie, check the barn (once you've bought the farm and upgraded it) :)