Classes are led by experts, many with thousands of hours of experience and deep knowledge and skill. In addition, there are often people training to become instructors who are happy to offer individual guidance.
Classes are tailored to the needs of the attendees. A starter session will be given if there are newcomers. New techniques and insights are always available for regulars. Advanced techniques may also be explored.
Classes begin with a brief announcement and introduction followed by 30-40 minutes of instruction and practice. Typically, classes are no more than an hour. Not long, considering the benefits can last a life time.