Pelikal....... "On the tablet I can't see any windows icon related to 'Get Windows 10'. Just wondering where I should be looking!! (no keyboard attached to the tablet, if that makes a difference)."
Don't want to burst your bubble, you must remember a tablet is NOT a computer, in the sense of a laptop or pc capabilities. Your 8.1 Windows op would be a 'cut down' version designed for a tablet. I doubt Windows 10 (cut down software) will not be available for maybe eight/twelve months at best.