So use me. Follow these links, wake up or catch up to Health 2010, and decide that today is THE day to educate yourself. GO.
The FDA want to teach you!
Your FamilyDoctor wants to gently take your hand and lead you into a knowledgeable world of wonders.
Even WikiHow has it's steps for achieving nutritional know-how. Ooh, alliteration.
WebMD has a mouthful of details and delights for those of you already all-knowing.