Well, a nice lad at the Windows store showed me a way to download Windows 10 (free, legal, licenced, and from Microsoft) without having to wait on the waiting list...you can find it here at
https://www.microsoft.com/en-us/softwar ... /windows10 . I downloaded it, installed it, and liked it...at first. Then I realised that the new start menu was MUCH less efficient than the Windows 8,1 start menu, and Google Chrome only launched in the Desktop version (not the app version, and I love the app version), and, finally, that one of my specialised sound design programs did not work in WinX. So, I reverted back to 8,1. We'll see what happens in 6 months or so, when all the compatability problems are fixed.