Most training regimes are full-time over several years. Teachers generally belong to an Alexander teaching society which regulates training and professional ethics. Teachers vary in their approach to teaching, but all base their work on the work of F.M. Alexander and the few Master Teachers he trained. Intensive workshops and group classes can be an effective and fun way to learn. Most are introductory, but some are ongoing.
People often find they learn more effectively in a group.
Everyone benefits from observing and learning together. Workshops and groups are generally more affordable than private lessons.