n00b

Newbie is a slang term for a novice, newcomer, or somebody inexperienced in a given profession or activity. In particular, it may refer to a new user of computers, and often concerns Internet activity, such as online gaming or Linux use. The origin of this term is uncertain. Earliest uses probably date to late twentieth century United States Armed Forces jargon, though possible precursor terms date much earlier. The related term noob (often stylized as n00b) is frequently used in online gaming.