OP here with update. A couple of things Eudora was working on my old win 7 now works fine under win 10. I don't use it but it is there is I need to look at old email. I use Mozilla Thunderbird which I like. Next... I use fences and it would not let me move any icons anywhere until I uninstalled it (not an easy feat) and got their latest version. Next... After a win 10 update I got a black screen with curser because win 10 removed my video driver. A common problem on Google search. Had to reinstall Win 10 and hope it doesn't reoccur when I do the next update. Avast Internet Security wouldn't run the firewall until I rebooted. Had to Google to see what to change as Win 10 restart would just say restarting forever.
I seem to have Win 10 working right now but it seems it is not still ready for prime time. If you are not computer savvy (or a computer luddite) you might want to hold off doing an upgrade. Most time it's better to just hold off and buy a new computer with the latest OS already installed and not try to upgrade.