Hello everyone, I'm a newcomer, but I really want to learn how to mine. How can I start my study? Can I recommend some elementary teaching? I'm currently idle 4 video cards at 1080, I don't know if it's useful, I hope Enthusiastic people can help me.
Welcome to the club. Pretty late to the game already, but if you already have video cards then might as well make the most of it with the limited amount of time you still have.
Your question is actually extremely vague and there numerous guides and tutorials you could start with. You can start your online research at
https://mining.help and then come back here when you've read up a bit and have some specific questions we can answer.