"I can read nutrition labels, but I have no idea what they mean."
Servings per container: Is that big chocolate bar really three servings? Make sure you know how many servings you're really eating!
Added salt means a high sodium content. People with high blood pressure should limit sodium to 500mg per meal or 1500mg per day.
Fiber is fantastic. Women should eat at least 21 grams of fiber each day, and men should eat at least 30 grams each day.
Sugars creep into foods we wouldn't suspect like bread. Divide the number of grams of sugar by four to see how many teaspoons per serving you are eating.
Avoid trans fat when possible. Some labels may say 0g per serving, but may still have small amounts (less than one gram per serving). Check the ingredient list for "partially hydrogenated oil." If it's in the list, the product has trans fat in it.
Compare the sodium or sugar amounts of two versions of foods you eat frequently.