If you use Vancouver Airport then it is now cheaper to use the CANADA LINE to YVR.
At Waterfront Station the Canada Line station entrance is to the left once you're inside Waterfront entrance.
From Skytrain level you walk same direction train is going to Westcoast Express/TransLink Ferry up escalator and turn right to main lobby and to right at convenience kiosk.
I pity older foreign travelers who don't use maps or even know their way around the city to find the library to plan their way back to the airport by transit using free computer access.
Nowadays a smart traveler has a smartphone and goes to internet cafes in Vancouver to plan their travel.
Training a new visitor to use a map and cardinal directions ought to be the Tourism Bureau's responsibility, not a random person at the Skytrain station.