Windows 10 has a store which means it's possible to have two versions of the same app (Todoist for example has a Windows store version and a regular .exe)

Windows as a service is a thing so you can't easily stop yourself from getting updates:

https://www.computerworld.com/article/3215108/microsoft-windows/windows-as-a-service-in-a-nutshell-explained.html

Windows 10 has the metro ui, so you have the regular control panel, and then you have Windows Settings. This among other stuff.

For the most part if you're familiar with windows then you'll be able to get around Win 10 fine though