If you are a long time Windows User and newly changed to MAC OS X. You will find difficulties like going to Desktop etc., Preferably when you are working in multiple programs you may need to go to the Desktop often.
Windows users know pressing the Window key + D will bring you to the Windows Desktop. But in MAC there is no separate key like Windows.
But you know Its even simpler in MAC. Just press the F11 Key:
I hope this would have helped you. Thanks.