Many lifters learn the bench press from powerlifters. And powerlifters certainly know a lot about it. But remember, their goal is to lift the most weight possible for one rep, and they often use special lifting shirts.
If your goal is to build size as well as strength, and you lift raw (without a stretchy lifting shirt), then your pressing form will be different. Here's a quick video lesson.
Tudor Bompa is known to many as the man who single-handedly revolutionized Western training methods. After more than forty years of work in the arena of international sports, he's widely considered one of the world's leading specialists when it comes to periodization, planning, peaking, and strength and power training.