Never forget that caffeine is a diuretic -- in other worlds, it will dehydrate you. It's a good idea that you drink plenty of non-caffeinated drinks, especially water, during the course of your day to counteract the diuretic affects. Otherwise, you'll end up dry and headachy.

If you want a flavor sensation and consider yourself somewhat adventurous, then by all means try some Kopi Luwak. This coffee, the most expensive in the world, is made from coffee beans that have passed through, and been transformed by, the digestive system of a wild civet (a weasel relative).

Exposed coffee, whether ground or in bean form, will eventually lose its flavor, so you should store it in a dark, cool, airtight place. Don't store it in the refrigerator, however, because it does have a tendency to absorb odors -- and you don't want garlic-flavored coffee.