The process to join the Air Force is not quick. It could take weeks or even months before you leave for Basic Military Training.
There are several qualifications that must be met in order to join the Air Force. Requesting information does not mean you're signed up to join.
Like any job, the Air Force is looking to fill open positions. If you meet the requirements, and there is an open position, you may be eligible to book that job. You will list 10 jobs you're interested in, and if one is available, you'll book it. The Air Force WILL NOT give you a job you didn't list.
While many military families prefer to live on base, it's not a requirement. Once you're a Senior Airman( 2.5 to 3 years in the Air Force), OR if you have dependents you can choose to live on or off base.
Depending on where you get stationed might determine how often you visit your family, but the Air Force makes visiting family easier by providing 30 days of paid vacation per year. If your leave request is gets approved, you can visit them anytime you want.