Primarily, Extension Studies courses are courses YWAMers create to serve their targeted audience. If you are aware of such a course being run in your area or at a YWAM base or campus, then you can find out what the course in teaching and if you are able to join. There are a growing number of Online Extension Studies courses that are available for people to train with, but the Extension Studies platform is designed for YWAMers to serve the wider world with the training they are passionate about. Take time to read through the whole web site, it is very informative.
I want to take some Extension Studies courses: where can I find them?