When you get off the plane, you follow the crowd..they willl all be going to the same place you want to go...the trams. Get on the tram. When you arrive at the main terminal, again, follow the crowd. They know where they are going. As you enter the main terminal, look up and to the side. You will see signage, in bright neon, that says Side A and Side B. Go to the Side B sign. You are on level 3 when you get off the tram, you want to go down to level 1. You can take either elevators or escalators...I combine. I take the escalator that is under the Side B side (at least that's how it's laid out where I arrive from) down to level 2, baggage claim, and then take the elevator down to level 1 and head down to DME...at the end of the bldg.
It's really very easy to find.