The Recent Tab on your left hand menu bar is an extremely handy tool to help you multi-task! You can think of it as your own personal Timeline, tracking the pages you have been to recently.
The top of this menu bar is where you can "Pin" pages to, which can be your most frequently visited pages, or simply Pin a page to save that extra click! You can Pin a page once it has been listed under your "Recent" by moving your cursor above the name and you will see a pin icon you can press to Pin it.
You are also able to use the Search Bar to find a page you have visited recently!