The author is particularly interested in comparative and historical research on Armenian as an Indo-European language. This "Introduction" consists of two parts. The first one describes the phonological and morphological system of Classical Armenian with the purpose of setting off its characteristic features, not of dwelling on such details as can be found in any good grammar book. The second part is comparative and historical. besides the best ascertained facts, it includes disscussions on controversial issues, as well as some new insights in histroical morphology.