Trying to resolve differenced from Media Wiki to XWiki - page creation

HI, i know this probably "THE" dumbest question you've gotten, but I have media wiki installed, admittedly its my first wiki experience. To create a document there I search for a file or click "GO", if nothing exists I have an option to create that document, and then I go from there. I've installed XWiki because of its great features, like PDF generation, RSS feeds, blogs, etc... What is the equivalent in XWiki to create a document? Thanks, -- slán, joe