First off:
1) Sami, the Air Force doesn't call them soldiers, they are AIRMEN.
2) If you are a military child, the best people to speak to are your parents. they understand moves, promotions, EVERYTHING, about life in the military.
Unlike my children who had no military background, I presume you live on or very near a military base... go THERE for immediate information.
3) How much research have you really done regarding USAFA? According to USNWR magazine and others, USAFA is considered akin to an Ivy League college... what do you need to do? You need to be competitive enough to make it to an Ivy League School, plus you have to be uber fit, and have leadership experience. ~~ SEE STICKIES. READ A.L.L. OF THEM.
4) As regards JOINING the Air Force Academy, one does not join. It is not a club. You are appointed after being nominated~~ see stickies above.
5) SCORE in the top 10% on all tests, SAT, ACT.... be the best of the best of athletes in your school ... be in the top 10% of your class.
6) QUIT ACTING OFFENDED WHEN YOU ASK FOR ADVICE AND THEN GET IT.