My 2/- worth.
If possible use Linux as your operating system, it's faster and way more secure than Windows plus it doesn't need an antivirus slowing down your computer. Don't use Google chrome, they harvest data. I suspect they sell the data on and it goes down the line again and again. I use Firefox browser it's secure and reasonably fast. For email I use Thunderbird it's fast secure and marks dodgy emails and flashes a warning if you click on a dodgy link.
If you do anything with a credit card or online banking use an on-screen keyboard. The system doesn't know what numbers or letters you click on so it can't save them. If there's a keylogger installed on your computer it won't pick up what you clicked wither.
DON'T use a password manager for important passwords memorise them. If your browser asks to save a password click no same as if a website wants to know your location don't allow it unless it's for maps.
Look for https at the start of a web address if it's not there be careful or just don't go there.
I got an email before Christmas from "myself" saying my account had been hacked and I had to send a bitcoin to some fool or all my p**n viewing sites would be passed on to my employer. I don't have an employer and last time I looked at p**n it was a top shelf magazine! It's easy to send someone an email that looks like it came from their own account.
https://www.komando.com/happening-now/4 ... ing-online