The most commonly used feature in Internet browsers is the back button. All browsers today also support the ability of going back to any recently visited page. To access this feature either click on the back button or hold the back button down. Holding the back button down shows the most recent pages you've visited and allows you to go back to the page of your choice. This feature is especially helpful for those pesky pages that forward you to another page each time you press the back button or for any time you need to go back more than one page.
Firefox can go back even further than what is shown in the menu. If the page you're wanting to go back to is even further back than the pages shown, click the last page and then repeat the above steps again until you get back to where you need to go.