One the simplest songs ever made.

Capo 1

----2-4-4-2-0---2-4-4-2-0------------|
----3-3-3-3-2---3-3-3-3-2------------|
----2-2-2-2-2---2-2-2-2-2------------|
----0-0-0-0-2---0-0-0-0-2------------|
------------0------------0-----------|
-------------------------------------|

That riff repeats the entire song. Like I said, simple.