This is all very clear, but when I get to step 4, it doesn't recognise my password. I suspect that somehow it's trying to login to an old local account rather than the one that's linked to my email, with a password I no longer remember, as I have been using a PIN since I upgraded to Windows 10, but maybe it's another issue. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.