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I want to use my Apple Mac Mini without connecting a monitor through the VGA, I have also a MacBook pro and an iPad. I want to know how I can use the MacBook pro (ideally wirelessly) to act as the display and keyboard and mouse for my Mac Mini.
Wirelessly I think you'd have to use something like VNC, which is built-in to the Mac OS.
Maybe see https://www.realvnc.com/products/ which I've had some success with.
Alternatively, there's Apple Remote Access, but that is more for a corporate environment & is reflected in the price.