Somthing you need to be very careful is your clipboard when you copy/past from the internet to your terminal. It can contain hidden malicious code… Nasty shit !

https://security.stackexchange.com/questions/113627/what-is-the-risk-of-copy-and-pasting-linux-commands-from-a-website-how-can-some

Always past into a text based application before pasting to your terminal.

Install updates regularly. Don’t install software from unofficial sources. If you see a recommendation like run curl something | sudo bash, ignore it. And, in general, don’t run anything as root unless you understand what you are doing and why this cannot be done without root privileges.

Welcome aboard!

Never got a virus or at least I don’t know about it 😅 But always install packages from official repositories or AUR (but I usually inspect PKGBUILDS for unpopular stuff).