A beginner; someone who has just started something and has little experience or knowledge.
このコースは初心者向けなので、基本から学べます。
This course is for beginners, so you can learn from the basics.
初心者はまず安全ルールを守ることが大切だ。
For beginners, following safety rules is important first of all.
初心者マークを付けたドライバーが道路に入ってきた。
A driver displaying the beginner's mark entered the road.