You might want to take a look at CentOS. The biggest thing CentOS brings is long term stability. Very little of your windows knowledge will translate directly to Linux, so don't expect much of that. In any Linux distro you will be able to choose among several different versions of the user interface "look & feel." You'll generally be able to try out KDE, Gnome, Xfce, and Mate, so even after selecting a distro you won't be locked into a particular UI.
What's annoying to many long term users is the way things in any OS keep changing in big ways every few years. CentOS gives you 10 years of updates without giant changes in operation. Those of us who have lived through win95, 98, 2000, xp, 7, &10 are tired of continually adapting to changes. More than any particular details about the CentOS user interface, I like its stability.