I got some useful ideas from this site when I was first starting out.
My husband was told to keep sodium at no more than 1500 mg per day. Learn to read labels. Thankfully the info is there, on the food labels; you just have to pay attention. The way I do it is to try to keep each of his three meals at 500 mg or less. Fresh/frozen produce has almost nothing, so the whole family is eating a lot more fruits & veggies. Be careful of cheese, condiments like ketchup, salsa, soy. Forget about deli meat, bacon, ham, soup, spaghetti sauce...all super high lthough other meats like steak, hamburger & turkey burger and most fish are relatively low. Pretty much nothing processed, nothing from a can. We bought several different flavors of Mrs. Dash spice blends to use as salt substitutes for sprinkling on top of foods and they are pretty good.