How do I know I am infected by virus/malware?

Hello ? Techspot,
Recently, I just got question about Virus/Malware Instruction.
The question is How do I know if my computer was infected by Virus/Malware ?
Also, I want to know what is "Online Banking" mean ? Is that mean Online Shopping ?

From
neowing

hey I am just a new guy here so take whatever I say with a grain of salt.

are you having any new problems with your computer that you weren't before?

Do you have an antivirus/spyware program? if so, run it and see if anything is detected. If not, get one and run it. make sure its updated before you run it.

Online banking refers to things like managing your checking accounts and paying bills online.


ok that's all I got.