!a few mario kart questions! plz read

1. How do u get the boost at the start?

2. how do u see your record?

3.how do u see your code?

4. how do u unlock the robot guy i see alot in wi-fi

1. Right after the the 2 on the countdown, hold the gas button which is A.

2. Im not sure. I just got this game last week.

3. Go to friend code in Nintendo WFC. Then go to confirm friend code to see your code.