A great nutritional tip is to check in with your doctor regularly. By checking in with your doctor regularly, you'll become aware of any health changes and you'll know if your diet is lacking in any way. You're taking a gamble if you don't visit your doctor.
A great nutrition tip is to always look very carefully at nutrition labels. A label might claim to be low in fat, but adversely it might be high in sugar. Being able to see the big picture when it comes to looking at nutrition labels is very important.