The Quick Launch Toolbar is the portion of the taskbar to the right of the Start Button that holds shortcuts to programs. If you click All Programs, you will see a list of all of the programs installed on your PC, plus various Windows utilities. You will also see 'All Programs' followed by an arrow.
If you click Start, you will see a menu of shortcuts, plus the option to Log Off or Turn Off (Shutdown) the PC. The Start Button sits at the left edge of the Taskbar. The taskbar is the blue strip that typically sits at the bottom of the desktop, and contains the Start button, the Quick Launch toolbar, placeholders for open windows, and the Notification Area.