I have landed at toronto

Davidzhou,
  now I want to buy second-hand bike and PC,could you tell some webpage which i can get some infomantions about these.
To new comer:
  Really when pass custom,none notices that you have taken many US dollars.In my wallet ,I put in 5000 usd,and some coins,the custom workers want to see is there some coin ,so they find 5000 usd in my wallet,but they say nothing .
  If anyone have questions,pls  in english, for i only can use library PC,cannot read and write in Chinese.