How to define a homepage like and set it's access right to all guests?

hello everyone:
I want to create a frontpage like
I already read Homepage customization
What skin/theme does the site use? - #3 by gurpal2000

i installed Leiothrix Skin extension,but the front page still have document head[in the red bounding box] which i want to hide.
can anyone help me out?
thanks a lot in advance!

by the way,can xwiki give a frontpage template?