1. Memorize TULIP.
2. Study Reformed Theology (here’s a place to start)
3. Read the Westminster Confession of Faith (for the 50th time this year for you Presbyterians).
4. Plan a trip to Geneva (or take one if you can quickly arrange it).
5. Watch the movie (Luther). Ok this isn’t about Calvin but it is about the founder of the reformation and an excellent movie.
6. Have a religious statue, image/icon destroying ceremony.
7. Enjoy a meal of Swiss or French origin (like Swiss cheese and French Fries).
8. Make sure you do not swear, gamble, or dance (even at weddings: apologies to my friend Elvis who is getting married on this fine day).
9. Be sure you attend church this week or be penalized (unless you have a good excuse, but it’d better be good). 
10. Enjoy a Calvinus beer. Note: this beer is hard to get, you basically have to go to Switzerland to get it. If you are not fortunate to be living in Switzerland, acquire some other beer of choice (a blonde ale), remove the label, slap a picture of Calvin on it and pretend it is a Calvinus. Then, to John Calvin - Prost!
bonus: read this fine article on Calvin by my good friend Bill Petro.