One of the easiest ways to enter into aerial photography is to study at an aviation school to become a pilot. Once you have the skills to fly, it's easy to make the step to taking photos in the air using remote equipment. This will also give you the skills to understand the complicated GPS readings you need to use in order to ensure you are photographing the correct space.
If you study as a pilot, it is also possible for you to learn photographic techniques later, giving you skills in both areas and enabling you to understanding information relating to heading and positioning while also mastering the technical aspects of aerial photography.
Many aerial photographers also learn by practice under the tutelage of an accomplished photographer. The older photographer can teach you the technical skills you need to succeed, and this gives you a change to learn and make mistakes while you are still training. This method of training is hands-on and not for everyone, but is a way to get in the sky and learn firsthand how aerial surveying and photography works.
An aerial photographer needs both photographic skills and technical aerial skills. In a competitive job market, and given the technical nature of this career, schooling enhances your ability to find a job.
Photographers will need to study aerial surveying and geomatic engineering, which will teach them how to shoot from the sky and how to find that they shoot. Community colleges and university can offer training in these fields with some specialized resources.