Actually I found that most people don't know the specific techniques very well. And by concentrating on form and the technical aspects of the lift one can increase their poundage almost immediately and decrease their likelyhood of injuries. The first important aspect is where you will be lifting.
Bench press is probably the number one exercise for killing people each year.
Don't be a statistic. Now set the lockout racks according to your arm length. I normally suggest that if you lie down on the bench that the lockout bars are sitting around wrist height. Positioning Now that you have the right environment the next thing you need to do is worry about your positioning on the bench. A stable starting position is paramount to a good lift.