Also, you can Google for the songs and find the chord charts for them. You have to know your chords b/c they're not spelled out. A chord chart is just the lyrics and the chord symbols above the lyrics. The chord symbols follow the same notation as regular sheet music (RH Chord/LH Bass note).
ie: C/E would be: C major chord in RH and E bass note or C-E-G/E
If you see just the letter by itself, you play the chord in the RH and the root note of that chord in the LH:
ie C would be played: C major chord in RH and C bass note in the LH.
I usually play the LH bass notes in two octaves (ie. C-C) to give it more bass.