Is it Chihiro's Kitchen? I tried googling it and found that.

What texture pack are you using? That kitchen is cute!

Look for middle grade books. I've been reading some American Girl books translated to Spanish. Manga is good to read too. For nonfiction, if you like true crime, I would recommend El crimen de Asunta.

I've always heard people say it depends on the course. People say the French & Spanish ones are better than others. People usually suggest doing more than just duolingo too. I stopped using it once I got into Spanish immersion. If it's useful though, then use it!