F1 – Opens the Help screen for almost every program.
F2 – Allows you to rename a selected 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 Apps (e.g. 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 emails in 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.