Keyboard shortcuts are a great time-saver, but they're not always easy to remember. Customizing shortcuts is a great way to set them to key combinations you'll actually remember. Here's how to customize Firefox keyboard shortcuts.
Make custom Firefox shortcuts and gestures
Step 2: Click on the orange Firefox button, then Options.
Step 3: Click on the last tab called Shortcuts.
Step 4: Double-click on the shortcut you want to customize, then type in the key combination you prefer to use.
That's it. Now you can use Firefox shortcuts that you might actually remember. For a complete list of Firefox keyboard shortcuts, visit Mozilla.com.