As per stated by illustrated, you may want to take some time to speak with a recruiter. We're both Army, so we can't really speak from personal experience, but there are a wide variety of Military Occupational Specialties within the U.S. Air Force. You can find jobs in anything from Law Enforcement, Natural Science, Maintenance, Special Operations, Intelligence, Nursing and so much more. A list of their Military Occupational Specialties can be found via their Careers page: [ Register or Signin to view external links. ]
There's also a vast amount of information available on other portions of their website, you'll just have to look around a bit. As for deployments, yes you can and likely will be deployed, this is entirely dependent on the unit you're assigned after successful completion of your basic and career specific training. The pay is the same for everyone across the Military, however your pay incentives may differ from others (dependent on your job, duty station, etc); an accurate pay chart for 2019 can be pulled up with a quick Google search.
As for the entry process, you'll first need to speak to a recruiter, of whom will request various different pieces of documentation (such as your birth certificate, high school diploma, etc). After you've submitted integral information to your recruiter, you maybe required to conduct a physical fitness test to gauge your abilities. You will then likely take a practice exam for the Armed Services Vocational Aptitude Battery; after this, your recruiter may advise you to touch up on any areas you maybe lacking in. You will then be sent to your closest Military Entrance Processing location (MEPS) where you will take the ASVAB, go through Medical and sign your contract. Shortly after this, you will return to MEPS and be sent off to your training location to conduct Air Force Basic Military Training (BMT). This information may differ from your actual experience, however my experience was similar to the one I've outlined above.