Nutrition is taught in colleges to so people become qualified to become accredited dieticians. You should be able to find a decent undergrad textbook on Amazon. If you get used and an edition behind the current one it should be cheap as well.
https://www.amazon.com/Nutrition-for-Foodservice-and-Culinary-Professionals/dp/0470052422/ref=cm_cr_dp_d_rvw_txt?ie=UTF8
Nutrition is taught in colleges to so people become qualified to become accredited dieticians. You should be able to find a decent undergrad textbook on Amazon. If you get used and an edition behind the current one it should be cheap as well.
https://www.amazon.com/Nutrition-for-Foodservice-and-Culinary-Professionals/dp/0470052422/ref=cm_cr_dp_d_rvw_txt?ie=UTF8