41 instruction in the design, development, installation, use, maintenance and repair of computers and networking and communications equipment and computer programs; instruction in organizing, sponsoring and conducting meetings, conferences, lectures, workshops, seminars and symposia in the computer field; instruction in publication of books, manuals, pamphlets, and other written material relating to the design, development, installation, use, maintenance and repair of computers and networking and communications equipment and computer programs; education services rendered through commercials in the field of computers and networking equipment