Also, the Settings menu is now called Administration.
To access these menus, and put them back on the left of the page, click on your name in the upper-right corner of the screen. In this screen, your profile, you should see the Navigation and Administration menus as "blocks" on the left of the screen, but not menus that float vertically on the left (if you do not see these menus, click the green "Customize this page" in the upper right of the page). To make them appear in this position, click the gray/blue "dock" button in each block. Now, these menus should appear in their usual place.