My Girl, written by Smokey Robinson and Ronald White of The Miracles, was recorded by The Temptations in 1964. It became their first #1 single and went on to become their signature song. The opening bass riff and following guitar riff are very simple patterns but go to show that a great song does not have to be complex.
This lesson goes over those parts, an easy way to add the riff to the chords, and the modulation into the key of D at the end. There is a short segment reviewing Pentatonic Scales as well.
This is a good beginning lesson as it is easy to just strum the chords and sing the song, although playing F as a full barre chord is heavily recommended.