This is a nice general guide to coffees from around the world. It gives basic information regarding coffee types, roasts, grinds, flavors and brewing methods. This will point you in a general direction and then you can experiment and try different roasts or regions to see the differences from region to region or within a region or single origin, how the roast levels affect taste, or within a specific origin and roast, how the brewing methods affect the flavor. The permutations are almost endless. Therefore, the search can go on almost indefinitely!