First you want to have a good antivirus program that automatically keeps itself up to date.
You also want to have a good firewall. Make sure you have the Windows firewall is active. Being behind a router will give you a hardware firewall too.
It's also a good idea to have a good malware checker like MalwareBytes that you run at least monthly.
This will get you started. Check with your ISP (Internet Service Provider) to see if they provide free antivirus protection. I know Comcast does.
I suspect someone has put a keylogger on my home computer. If I take a picture off my computer with a flash drive, have a printed paper copy (old fashioned photo) made of it, then scan this paper photo onto a CD to put on another computer, is there a chance that the keylogger could get onto the new computer?
I am sure you can tell I know nothing about computers. Any help would be appreciated.