You should first determine what you want to know more about it. As in is there a direction or particular reasoning for increased knowledge in the nutrition relm.
You will find that most of the recommendations you'll probably get here will be more focused on bodybuilding centric approaches. There is nothing wrong with that and with an actual evidence based approach the science isn't going to change for other areas, but it may not highlight areas you may have interest with.
It is good to still consider the basics and branch out from there.
If you are interested in the science and studies start with something like position stands from the ISSN:
List of Position Stands
You can use that or searching other "broad" studies that give an overview on the topic, then if anything within them catches y our interest you can read the individual studies in an area.
Alternatively if that seems "heavy" the AARP suggestion above is a good one or Weightology by James Krieger (although it has quite a bit of training related info for study breakdowns as well depending on if you care about that). MASS is awesome in this regards as well, but also is more geared towards training as well and a strength athlete bias.
Considering I have similar sport performance and bodybuilding bias as well I think that the Mike Israetel suggestion is great or the Renaissance Periodization books are another good area to dive into (they have a few different from areas important to women, kids, etc.).
The Muscle and Strength Pyramid books by Eric Helms, Andy Morgan, and Andrea Valdez are pretty solid as well.
Finally, following any of the above mentioned on their websites, podcasts, or instagram (I'd toss in old forum vet here Ben Carpenter as a great follow if you do the social media thing as well) can be a good way to get little actionable tips or breakdowns at a more frequent pace too.
Good luck and understand this probably vastly undercuts the amount of good people and information out there, but can serve as a great start.