questions regarding air force nurse

1) Would AF pay for my college tuition during nursing school or after school?if during school, when should I apply for it?
Look into the Air Force ROTC Nursing Scholarship. Pays for three years of college and you are eligible after completing one year of college. The AFROTC site will have more details and eligibility requirements.
When will you transfer to a BSN program?

2)How long is the contract usually for repaying my loan(with or without bonus)?
In ROTC the commitment is 8 years. 4 active and 4 inactive

3)After contract is done, am I free to live as a civilian? or would military call me again if needed?
After the 4 years active, yes you would be "free" to live as a civilian. The AF could call you up while on inactive reserve, but it is HIGHLY unlikely.

4)Can you choose where you want to be stationed at overseas? or would AF deploy me wherever they need to?
No. You can give them a list of preferences, but the bottom line is that they own you and wil send you where they want / need you the most.

7)Do you require prior nursing experience in AF or is new grad ok for AF nursing?
New grads are fine.