Well these days I don't really motivate newbies about antivirus softwares pretty much because they really can't save you from a lot of flaws anymore ranging from fake emails to phishing links and one most crazy one keyloggers... Antivirus softwares do work but on a basic level so I won't advise relying on them for your security.

Infact when getting an antivirus software you also have to make sure you are working with the original source else you may end up installing a malware too.