A slash chord is pretty easy to understand. Normally you’d take the root of the chord and play it in the left hand, but with a slash chord you play a different note in the left hand – whatever is to the right of the slash.
So for instance if you see an F chord on paper, you’d normally play an F in the bass. But if it says F/A (we’d call this “F over A”), you’d play the F chord in the right hand but an A in the left hand.
Watch the video to see what I’m talking about. Email me here if you have questions!