Educational services, namely, conducting classes, workshops, and seminars in the field of propane use and safety and distribution of course material in connection therewith; publishing of pamphlets, books, fact sheets, case studies, articles, workbooks, electronic publications, websites and educational course material relating to propane use and safety; production of audio-visual materials, namely DVDs, videotapes, and audio-video files in the field of propane use and safety; providing on-line downloadable audio-video files in the field of propane use and safety