worldtraveller ... you should give some thought to going to a grocery store and reading the packets of food. They list the ingredients, and sometimes even the vitamins and minerals, on the sides of boxes, bottles, etc. It can be quite informative.

You might also want to take some time to browse through the information on the Nutrition Data website. There are lots of articles about food and nutrition there, and you can search for foods and find out what else is in them ... the vitamins and minerals not listed on the boxes and bottles.