Get a key of g harmonica and become familiar with the song.
Step2
Start playing the tab is as follows (example) 8,-8 means blow the eighth whole then draw or suck the eigth whole. Here's the tab 5, 6,-5, 5,-4,4, 3, 5, 6, -6, 6,-6, 6, 5, 4, 4, 4, 5, 5, 5, 5,-4, 4, 3. thats it
Step3
If you have one put your harmonica in a neck rack and accompany yourself on guitar.