Thank you very much for everyone!!
I really do appreciated your kind tips.
I am already in Seattle, and I thought I'd better report what I have done. I try to make it short, but as you may notice please allow my poor English.
I was assisted by very friendly staff at YVR station. Based on gglave's kind advice, I headed to the Central station first then dropped off my bag.
I had a walk to China town, and caught a train to Canada Place where I had a great time (When I come back to Vancouver later, I will meet up with my friends, so I thought I should do touristy things by myself first).
I caught a train again at Granville station to head back to station.
While I was resting in a park front of station, I had a very good chat with, again, a very friendly guy for a while, which helped me for both to stay awake and to learn something about Vancouver.
Luckily, I was seated on right side (I have given up my driver's license since I moved into Australia), so I have enjoyed the view a lot.
The thing made me smile and feel warm was there were many people waving at the train particularly along the coast line.
I had a great walk around the city today. So far so good!!
I am very much looking forward to coming back to Vancouver and exploring more.
Once again, thank you so much for all of you!! ^^
Kindest regards,
sushiinSYD