It's not bad, though if unfamiliar with the airport, the way from where you re-enter the terminal after the transit security check to the shuttle train is oddly not well marked at all. There is a map nearby though which will get you moving in the right direction. You go down 3 sets of escalators I believe (may only be 2 sets). Trains come every few minutes and take only a few minutes to get to the satellite concourse.