Helpful tutorials on how to spy on the computer for me

I don't know whether it is approperiate to talk about my topic here. Well, I still want to say something.
I'm always curious about some monitoring software or spy software, and recently I've heard of some monitoring software which can be remotely installed on the computer, It seems like remote spy software, but I'm not sure, so I searched on google, a quick google brought me to this website about tutorials of how to spy on your computer. There are more useful articles out there, and I feel it will help us. So I share it for you.