41 Education and training for professional certification purposes, namely, conducting classes, workshops, online and non-downloadable webinars, seminars, and practice sessions in the nature of practice educational examination sessions, all in the fields of building improvement, maintenance, repair, and operations, appliances, industrial supplies, and safety equipment; conducting education, namely, classes and workshops and training for professional certification purposes, in the fields of building improvement, maintenance, repair, and operations, appliances, industrial supplies, and safety equipment, for property maintenance technicians and property managers