Chocolate is an interesting and intricate as wine - if not more so. Fully tasting chocolate requires a bit of patience and concentration; for best results, expect to tap into all 5 senses. Today I found an excellent 13 step guide to tasting chocolate at wikiHow.

Just to give you an idea of how detailed this guide is, you don't actually put the chocolate into your mouth until step 9:

9. Place the chocolate on the tongue and allow it to arrive at body temperature. Let it melt. This step is crucial, for it allows the cocoa butter to distribute evenly in the mouth, which mutes any astringencies or bitterness in the chocolate.

10. Observe the taste and texture. As the chocolate melts, concentrate on the flavors that are enveloping your tongue. Melting will release more volatile compounds for you to smell. Close your eyes, take notes, enjoy this moment of bliss, and bask in contentment. Texture can be the most obvious clue about the quality of a chocolate. Low quality chocolates will have a grainy almost cement like texture. Revisit when the time comes. Link.

I find that chocolate tasting is all about the experience. The point is not to do it 'right,' but to enjoy it, experience it in a whole different way, and to learn something new.