All the Windows 10 keyboard shortcuts you need to know

Ctrl + A: Select all items in a window.
Ctrl + C or Ctrl + Insert: Copy selected or highlighted item (e.g. text, images and so on).
Ctrl + V or Shift + Insert: Paste selected or highlighted item.
Ctrl + X: Cut selected or highlighted item.
Ctrl + Z: Undo previous action.
Ctrl + Y: Redo action.
Ctrl + N: When File Explorer is your current window, open a new File Explorer window with the same folder path as the current window.
Windows key + F1: Open "how to get help in Windows 10" Bing search in default browser.
Alt + F4: Close the current app or window.
Alt + Tab: Switch between open apps or windows.
Shift + Delete: Delete selected item permanently (skip the Recycle Bin).

You can use these keyboard shortcuts to open, close and otherwise control the Start menu and the taskbar.

Windows key or Ctrl + Esc: Open Start menu.
Windows key + X: Open the secret Start menu.
Windows key + T: Cycle through the apps (including pinned apps) on the taskbar.
Windows key + [Number]: Open the app pinned in the [number] position on the taskbar. For example, if you have Edge pinned in the first position on the taskbar and you click Windows key + 1, Edge will open. If the app is already open, a new instance or window will open.
Windows key + Alt + [Number]: Open the right-click menu for the app pinned in the [number] position on the taskbar.
Windows key + D: Show or hide desktop (Windows key + , will display the desktop briefly).

These shortcuts control how individual windows act on your desktop, including virtual desktops.

Windows key + M: Minimize all open windows.
Windows key + Shift + M: Restore minimized windows.
Windows key + Home: Minimize all windows except the selected or currently active window.
Windows key + Up arrow: Maximize selected window.
Windows key + Shift + Up arrow: Maximizes the active window vertically while maintaining its width.
Windows key + Down arrow: Minimize selected window.
Windows key + Left arrow or Right arrow: Snap selected window to the left or right half of the screen. (If the window is already there, Windows key + Up or Down will snap it into a quadrant.)
Windows key + Shift + Left arrow or Right arrow: Move selected window to the left or right monitor.
Windows key + Tab: Open Task view (virtual desktops).
Windows key + Ctrl + D: Add new virtual desktop.
Windows key + Ctrl + Right arrow: Move to the next virtual desktop (to the right).
Windows key + Ctrl + Left arrow: Move to the previous virtual desktop (to the left).
Windows key + Ctrl + F4: Close current virtual desktop.

These keyboard shortcuts use the Windows logo key to perform various tasks, such as launching both Windows and third-party apps.

Windows key + A: Open the Action Center.
Windows key + S: Open Cortana in text mode, so you can type in the search bar. (Windows key + Q does the same thing.)
Windows key + C: Open Cortana in listening mode (similar to saying "Hey, Cortana").
Windows key + E: Open File Explorer.
Windows key + F: Open the Windows 10 Feedback Hub.
Windows key + Ctrl + F: Search for PCs on a network.
Windows key + G: Open the Game bar.
Windows key + H: Open the Share sidebar.
Windows key + I: Open the Settings menu.
Windows key + K: Open the Connect sidebar (for connecting to new Bluetooth devices or Miracast).
Windows key + L: Lock your computer.
Windows key + O: Lock screen orientation.
Windows key + P: Open presentation or projection sidebar.
Windows key + R: Open the Run window.
Windows key + U: Open Ease of Access center.
Windows key + W: open the Windows Ink Workspace for scribbling on tablets or touchscreen laptops.
Windows key + Print Screen: Take a screenshot of the entire desktop and save it to the Screenshots folder in the Pictures folder.
Windows key + (+) or (-): Zoom in and out with magnifier.
Windows key + Esc: Exit magnifier.

You can use these keyboard shortcuts inside the Windows 10 Command Prompt.

Ctrl + C or Ctrl + Insert: Copy selected text to the clipboard.
Ctrl + V or Shift + Insert: Paste copied text inside the Command Prompt.
Ctrl + A: Select all text on current line. (If current line has no text, all text inside the Command Prompt will be selected.)
Ctrl + Up or Down: Move screen one line up or down.
Ctrl + F: Search Command Prompt via Find window.
Ctrl + M: Enter Mark mode (allows you to select text with mouse). Once Mark mode is enabled, you can use the arrow keys to move the cursor around.
Shift + Up or Down: Move cursor up or down one line and select text.
Shift + Left or Right: Move cursor left or right one character and select text.
Ctrl + Shift + Left or Right: Move cursor left or right one word and select text.
Shift + Page Up or Page Down: Move cursor up or down one screen and select text.
Shift + Home or End: Move cursor to beginning or end of current line and select text.
Ctrl + Shift + Home/End: Move cursor to beginning or end of screen buffer and select text and beginning or end of Command Prompt's output.