"A great cocksman isn't born, he's taught."
I read that quote (or something akin to it) many years ago, but can't remember who said it. Nonetheless, it's quite true.
We aren't born knowing how to handle these things in the best way; we must learn what to do for the best results. Another excellent learning tool for men is mutual masturbation; kicking back and jacking off with a buddy.
How does he stroke his boner? How does he vary the speed, the amount of friction? Does he use lube other than his own pre-cum, or stroke dry? How does he know when he's reached a peak - what does he do to stave off shooting?
Even a group. You'd be surprised how many straight men attend jack-off groups. It can be as much about learning as it is about the physical pleasure and release.
Watching another man pleasure himself can provide tons of useful information. Observing how he changes grip, the amount of pressure he uses, the varied speeds of stroking.
We are so much more than our cocks. Seeing another dude caress himself someplace other than his dick, or balls, or taint, is a way of finding other erogenous zones we may not be aware we have until someone else tells us about them, or shows them to us.
Guys, did you ever stroke with a buddy and learn anything new?