From Noa_alex, here's how to get the best starting boost possible:
"Many of you may be wondering, "How do I get that really cool boost at the beginning, I can't get the timing right?" Well, I'm here to tell ya (besides, it no fun getting half a lap ahead so quickly)
To get the BEST boost, press and hold A when it says 2, right in the middle of when it shows up, and when it's going away. It you do it too soon, you'll spin out. You can press A as the 2 is disappearing, but your boost won't be as great, but you don't run the risk of spinning out.
3...2...1...GO
^
Best Place"
"Many of you may be wondering, "How do I get that really cool boost at the beginning, I can't get the timing right?" Well, I'm here to tell ya (besides, it no fun getting half a lap ahead so quickly)
To get the BEST boost, press and hold A when it says 2, right in the middle of when it shows up, and when it's going away. It you do it too soon, you'll spin out. You can press A as the 2 is disappearing, but your boost won't be as great, but you don't run the risk of spinning out.
3...2...1...GO
^
Best Place"
