Train - Mississippi Chords & Tabs

This is the beginning riff to Train's Mississippi on the album Drops of Jupiter. The 
of this song is built off this riff, which is explained second.

Artist: Train
Album: Drops of Jupiter
Song: Mississippi

[ Tab from: https://www.guitartabs.cc/tabs/t/train/mississippi_btab.html ]
G------------------|
D------------------|
A------------------|
D--2-3-5-5-2-0-----|

That's the main riff, and you build off those notes and A as well for the rest of the 
and every measure you play that intro riff again. Easy as that.