I'm going to agree with the other guy here - it will help you so much with your ear if you can sound out what he's doing and then just peek at his hands when you need help zeroing it in. And I mean it will help A LOT. There's nothing better as a guitarist than a good ear. Second best thing is being a human metronome, wo working with a metronome will give you that pro sound - even if you can't do fancy stuff, if you're timing is perfect you will sound like an expert.