Open up the Task View pane by clicking the Task View button, or by pressing the Windows Key + Tab
Click New Desktop.
To switch between desktops:
Open the Task View pane and click on the desktop you would like to switch to.
You can also quickly switch between desktops with the keyboard shortcuts Windows key + Ctrl + Left Arrow and Windows key + Ctrl + Right Arrow.
To move windows between desktops:
Open the Task View pane and hover your cursor over the desktop containing the window that you want to move. (The windows on the selected desktop will pop up.)
Find the window that you want to move, right-click it, select Move to, and choose the desktop you want to move the window to. (You can also drag and drop windows to the desired desktop!)
To close desktops:
Open the Task View pane, hover over the desktop that you want to close, and click the small X that appears in the top-right corner.
You can also close desktops with the keyboard shortcut Windows Key + Ctrl + F4.