I've just got a quick question about how to train Wifi attacks (WEP,WPA,etc...), I can't really do this on my own Wifi, it would be terrible if someone broke into it for example, so do you guys know a way to do that, maybe creating a virtual wifi or something, I don't know.
You can simply buy a cheap router. Login to the admin dashboard and setup what ever WiFi security settings you want to attack. The device doesn't even need to be connected to the internet or your network.
To put it simply, you have to practice breaking into wifi authentications.
For this, you either need to setup your own access point or try breaking into someone else' with their prior permission.
How are you planning to do it anyways ? is upto you.