The back/forward buttons would be approximately in the same place as IE - the top left corner - by default. Make sure your address bar is turned on - Go to your View menu and choose Show or Hide Address bar, until you are sure that is showing. Then choose Customize Address bar from that same menu. You will see what the back/forward button looks like. drag it to your address bar if it is missing, or just drag the default set to replace what you have showing now.