experienced,
experient having experience; having knowledge or skill from observation or participation
unskilled not having or showing or requiring special skill or proficiency; "unskilled in the art of rhetoric"; "an enthusiastic but unskillful mountain climber"; "unskilled labor"; "workers in unskilled occupations are finding fewer and fewer job opportunities"; "unskilled workmanship"
callow,
fledgling,
unfledged young and inexperienced; "a fledgling enterprise"; "a fledgling skier"; "an unfledged lawyer"
new,
raw unfamiliar; "new experiences"; "experiences new to him"; "errors of someone new to the job"
uninitiate,
uninitiated,
naive not initiated; deficient in relevant experience; "it seemed a bizarre ceremony to uninitiated western eyes"; "he took part in the experiment as a naive subject"
