Concerning the cynicism of the last post, here is a little optimism to add to the mix. Just for the record, coffee is a wonderful thing and I am not very picky about it (proven by the fact I still study at Starbucks). While I am still in a bit of a quandary about some of the things I have heard in that place (I mean some would blow your mind, they are so long!), I have found at least one good resource for basic Coffee Speak interpretation
and one ok Coffee Speak interpretation.
To be quite honest, though, I think someone needs to get a little more familiar with the Starbucks dialect--which is much too sophisticated even for these resources.