Sometimes you need to go back to the previous page. Why use your mouse for that when you can let your fingers do the work with a little Keyboard Kung Fu.
Substitute the back button with this simple move
Holding your thumb on the ⌘ key, tap the [ key with your index or middle finger.
You can also go forward to the page you just left by using the Command key with the right bracket, ⌘].
Not just for web browsers
The command-bracket key combination not only works in Safari, Chrome, Firefox or any modern web browser but it’s also very useful for navigating while in Finder.
Try it now – leave this page and go back to the previous page using ⌘[ and then go forward with ⌘] to return to this page.
Neighboring states may be so close they can hear each other’s dogs and roosters,
but they make it so that the people have never gone back and forth.
– Chapter 80, Tao Te Ching.