Product School Repo
Website that documents a huge list of the most common product manager interview questions (of different styles and contexts)
thepminterview.com
Awesome site where you can practice various types of mock-pm-interviews with yourself
Decode and Conquer
Excellent book that has relevant practice PM interview questions (and detailed sample answers) as well as product interview frameworks (that work)
Exponent YouTube channel
YouTube channel that has a ton of videos and playlists that demonstrate high quality PM interview question responses and demos. I personally really liked the "Improve Spotify's Social Features" practice video.