Can you install Minecraft on another pc if you have already bought it or do I have to buy it again?
Sure you can reinstall it you just need your login data or email with password!
Then you just have to register your account again and you're done. You don't need to buy again.
OK thanks
OK thanks.
Of course you can install it again.
OK thanks
Just have to know email and password.
The one I know is mine.
Yes, some have an account and don't even know the email anymore.
That is stressful.
You don't have to. Simply install the launcher, register and you're done.
Launcher is here: https://www.minecraft.net/.../download/
Have fun!
