You may have to tell folk why you think it matters.
2. How to install antivirus?
This can't be written about here. Why? Because there are over a dozen antivirus companies and not one installs like the next.
If an antivirus company will not help you install their solution, don't buy from them.
I have a Acer One Asper, and a Dell PC. I am wondering how to install the antivirus program on each, and if its best to do it first on desktop one or other way around?