Contact or go to the colleges and education centers in your local area. Ask if they offer a course in airbrush tanning or if they have a beauty course that includes this. Speak to the admissions officer about how much it costs, if you need any pre-requisites and how long it takes.
Seek advice from salons or tanning centers. Find the ones that offer an airbrush tanning service and speak to the person who performs it. It might be possible to arrange a private training session, or they could recommend a course to you.
Log onto the American Tanning Institute's website and read about certifications you can obtain online for airbrush tanning. It provides DVDs so you can train in your own time, or you can attend a course at a particular salon that the institute works with.
Read through the information about online learning and college courses you have researched. Decide which option fits with your schedule and budget, or offers the most comprehensive learning program.
Enroll and complete the course you have chosen. Be sure to attend all the training sessions or watch the DVD tutorials from beginning to end.
Keep your skills up to date by using online resources to read about new airbrush equipment, techniques or products. The American Tanning Institute can also be contacted if you need additional advice.