Note: you will want to have a recent machine with a good video card and plenty of memory. . The screen does not artifact like the picture. Just a quirk of the screen shot module.
Step 1: Normal screen
In the first screen is a typical desktop. with the mouse pointing to the switcher. It is empty because we do not have any windows open. In the second screen we have moved to the second workspace (just by clicking on it. ). Firefox was loaded and you can see a small image in the switcher to indicate that. In the third screen, we have moved back to the first workspace where no applications are open. But Firefox is still open. You can tell that because the Firefox image is still shown in the workplace switcher.
So you can tool around the workspaces pretty easily. But I want more.