You'll learn more about the world of coffee from Mark Prince's CoffeeGeek podcast than the next ten best sources combined. Be advised though this is a full-featured and wide-ranging podcast covering many aspects of the coffee world, not just the product itself. You'll learn where it comes from, who grows it, how it gets to your cafe, how to brew it properly (and improperly), plus you'll hear about and often times meet some of the people who help shape the world of speciality coffee from baristas competing in competitions to cafe owners and microroasters. Listen to the first shows so you can establish the foundation that Mark bases his coffee philosophies and practices upon. It's a shame some people don't understand professional quality when they hear it and give this excellent podcast a poor review. This guy is top notch, a leader and authority in his field.