First co-op game with my girlfriend : advice and experiences?

Hey everyone!

I'd like to play Stardew Valley with my girlfriend. I'm a pretty experienced gamer (although I've never played Stardew Valley myself), while she doesn't really play video games at all.

For those of you who started the game under similar circumstances, how did it go? Would you recommend it as one of the first games to play together with a non-gamer partner?

Also, do you have any tips to make the experience as fun as possible without spoiling too much? I'd like us to discover the game on our own and make the same beginner mistakes everyone makes, but if there are any small quality-of-life tips that help avoid unnecessary frustration without giving away major discoveries, I'd love to hear them!