alphabetarian
/ˌalfəbɪˈtɛːrɪən/noun
A person who is learning the alphabet or who is engaged in elementary education; one who is inexperienced in a particular subject; a novice, a beginner. Compare abecedarian. Now somewhat rare.
Origin
Early 17th century; earliest use found in John Selden (1584–1654), lawyer and historical and linguistic scholar. From post-classical Latin alphabetarius alphabetary + -an.