correspondence courses; teaching; vocational retraining; educational services provided by schools; providing training and educational examination for certification purposes; academies [education]; educational services; instruction services; educational examination; practical training [demonstration]; vocational guidance [education or training advice]; coaching [training]; arranging and conducting seminars; organization of exhibitions for cultural or educational purposes; arranging and conducting of symposiums; arranging and conducting of workshops [training]; providing online electronic publications, not downloadable; online publication of electronic books and journals; publishing of books; providing online videos, not downloadable