I think that's one of the daunting things for people. e.g. What's a window environment? And why would I want one? And what's the difference?Renegade
knows the answer to that rhetorical question, but for someone new to considering Linux, a window environment is more or less the basic GUI, which can then be altered throughout using "Themes." Windows does themes, but most people stick with the default. The window environment is just that -- a window or view to the apps on your system. Gnome comes with many different apps than KDE does. Others like Xfce can share between them. At installation, load the apps you would use and uncheck those you would not. Both KDE and Gnome come with DVD burning software, browsers, system apps, choice of file managers, basic games, LibreOffice, photo management software, image editor, scanning, renamer/s, document viewer in Okular (including PDF), FTP client, text editor/s, and so many others you'll be drunk with choices.
Some are excellent. Some are very good. Many are good. Whatever you don't like, you can try an alternative. Uninstalling one and installing a new one is as easy as checking/unchecking a checkbox in a list of similar apps. That's how hard Linux is these days. I find working with my wife's Win7 laptop far more complex. But it's what you get used to. But when you want to upgrade or try an entirely new distro, that's when Linux really pays off. You're not locked in.