how to

After you get the Rusty key how do you get Krobus to be your roommate is it like with a heart event

Im on a chromebook and i made a backup save earlier today thinking i fall asleep midgame and miss some days which did end up happening, but now im wondering... how do i use that backup save? the pause menu has 3 buttons return to title screen, return to previous save, and backup save then settings.

ive been playing stardew valley for a few years now, and ive always been a very casual player, but i sometimes integrate some little bits of min/max strategy into my gameplay. ive never actually done a min/max run of any game, and i dont really know anything about min/maxing, but i know its...