Acoustic Guitar Players...HELP!!?

i just got a new acoustic guitar and after learning the basic basics i still dont get how to play chords i found online. for example what's this(as in on what fret holding on what string and playing which strings in what order...etc.)-> e|5-6p5-5\3-3\1-------------------------… from (http://www.azchords.com/n/natashabedingfield-25990/unwritten-230749.html) . plus what are some famous ppl guitar players just have to know and wat's lyk the most famous guitr player at the moment? btw what are some good teaching websites? lyk i syd im a beginners so thanx for the help!