Newbie

Newbie, newb or noob is a slang term for a novice or newcomer, or somebody inexperienced in any profession or activity. Contemporary use can particularly refer to a beginner or new user of computers, often concerning Internet activity, such as online gaming or Linux use. It can have derogatory connotations, but is also often used for descriptive purposes only, without a value judgment.

The term's origin is uncertain. Earliest uses probably date to late twentieth century United States Armed Forces jargon, though possible precursor terms are much earlier. Variant forms of the noun include newby and newbee, while the related term noob (often spelt n00b) is often used in online gaming.

https://en.wikipedia.org/wiki/Newbie