F1 to F12: here’s how the function keys on your keyboard can save time

F1   Opens the Help screen for almost every program
F2   Allows you to rename the secected file or folder
F3   Opens a Search feature for an application that is active at the moment
F4   Alt+F4 closes the active window
F5   Allows you to refresh or reload the page or document window
F6   Moves the cursor to the address bar in most Internet browsers
F7   Used to spell check and grammar check a document in microsoft applications such as Microsoft Word
F8   Used to access the boot menu in Windows when turning on the computer
F9   Refreshes a document in Microsoft Word and sends and receives e-mails in Microsoft outlook
F10  Activates the menu bar of an open application. shift+F10 is the same as right
clicking
F11   Enters and exits full Screen mode in Internet browsers
F12  Opens the Save as dialog box in Microsoft Word