Look up this word
newcomer

In a sentence
Tom je nováčik.
Tom is a newbie.
Toto je nováčik.
This is a newcomer.
Practice frame
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.