Well here is a lesson about the I IV V chord progression and a common variation of it. There are literally hundreds of songs that follow this basic format. Crosby Stills and Nash among others have many like this.You May want to "TEACH YOUR CHILDREN"
This would be the format for the verse portion of the song.
Check the next page for the Chorus portion and also to learn a new chord that takes us slightly from the I IV V format
Chords Used here