Some people might want to have a short cut for desktop in their task bar so that they can have easy access to the files in the desktop. To show the desktop just do either of the following.
Just right click on to the task bar and click show the desk top.
This method is time consuming as you have to right click every time, in the task bar.So better to follow method 2.
Right click on to the task bar and then click on to the toolbars.
Then click on to the desktop submenu.
Now you will be able to see a desktop bar at the right side of the task bar. Just click on it to view the contents of the desktop.