in·tro·duc·to·ry 
(ĭn′trə-dŭktə-rē)
(ĭn′trə-dŭktə-rē)adj.
Of, relating to, or constituting an introduction; initial or preparatory: introductory remarks by a speaker; an introductory psychology course. See Synonyms at preliminary.
in′tro·ducto·ri·ly adv.