Hi Ervie, welcome to GN.
David's lesson will get you there. Despite the easy chords, it's a tough one to pick up. I tried early on and bagged it for quite some time. I do it and enjoy it now though. The timing of the strumming is key. I also add a bit of emphasis to some of the strums for personality too.
Oh, and eventually, on the intro, try an Em7.
"I wonder if a composer ever intentionally composed a piece that was physically impossible to play and stuck it away to be found years later after his death, knowing it would forever drive perfectionist musicians crazy." - George Carlin