A few tips for college?

[21992]

Hey guys, I'm applying to colleges right now, if you can give some tips that would be incredible. Some facts about me:
-3 APs this year
-4.1 weighted GPA throughout highschool
-2000 on the SAT
-looking to major in Game Design or Computer Science. More focused on game design though.
-want to go to college for the education and not the status (I know it sounds pretty cliche)
-Like tutoring kids: I volunteer at my library to teach little children.
-Please ignore the above, I consider myself to be pretty mediocre, but I want to have a purpose in my life in the form of making video games for a living.

So does anyone have tips for writing personal statements? The general process? Dos and Don'ts? I'm intimidated by the whole system and I'd figure most of the people here has gone through this process. This site has been a part of my life for a couple of years, it and it's community have already done much for me; this would be the cherry on the sundae. Thanks for your advice.