Hello Jafar,
usually you become a member by meeting us in person on one or more workshops. We usually like to get to know people personally, before they become members. In some occasions it is possible to be invited for membership when people stand out in our online courses. In the last year or two, however, we have kind of moved towards only inviting people who have met us in person, because this practice has proven to be more beneficient for both sides in the past.
L.V.X