Where to learn more about nutrition and what which food does for your body

Hello everyone. I’d really love to get into a more healthy lifestyle. I’m currently reading how…. But I’d like to learn more about what each vegetable or food really does for your body (like for your liver or brain etc.) What things are good for your gut etc. and more ofcourse. I do have a pretty general knowledge and eat right but I would love to learn more about how I can feed my body best. Do you have. Any recommendations for movies, influencers, books etc are very welcome :)