Better yet, take a Wilderness First Aid course, and even better, an Advanced Wilderness First Aid course.
Also, anyone heading into the backcountry to ski (or to do pretty much anything else) should have some basic first-aid and CPR training. (Here is an example of why.)
Plus seeking out specialized avalanche safety training is just kind of backwards if you haven't already received basic first-aid training.
(Your credentials don't necessarily need to be current -- although a periodic refresher is a good idea in general -- but you should feel reasonably comfortable with CPR, bleeding control, and splinting.)