About the different coffee types
There are two main types of coffee on the market - Robusta and Arabica.
Robusta has more caffeine, but is not as good (ie bitter). Arabica is a higher quality bean, and is what you'll want to buy. While most coffees for sale are Arabica, it pays to make sure.
What you'll most often see, though, is where the coffee comes from, such as Colombian coffee (usually marked as 100% Columbian).
Flavored coffees have had essential oils added at the end of the roasting process to give them a specific taste. One of the more popular flavored coffee is
Irish Creme
. You can pick up a 1lb bag for premium coffee for under $10 at that link. CoffeeAM also carries over 100 Different Flavored Coffees!