Keyboard shortcuts can significantly enhance your productivity by allowing you to perform tasks quickly without using a mouse. Some essential shortcuts include Ctrl + C for copy, Ctrl + V for paste, Ctrl + X for cut, and Ctrl + Z for undo. To switch between open applications, use Alt + Tab, and to quickly access the desktop, press Windows + D. For capturing screenshots, use Windows + Shift + S to open the snipping tool in Windows and Ctrl + Shift + S in browsers like Firefox and Edge for their built-in screenshot tools. Familiarizing yourself with these shortcuts can streamline your workflow and improve efficiency.