In reply to shooting better. There are 3 basics to shooting better. Breathing, trigger squeeze, and sight picture. Its kinda hard to explain in writing, but I'll try.
Breathing: You never want to shoot holding your breath. You want to shoot at the bottom of your breath.
Trigger squeeze: You never want to jerk the squeeze. Slowly squeeze the trigger till the fire arm goes off. It should be a surprise every time.
Sight picture: This is subject to change in every person. You just want to be comfortable. You shouldn't have any muscle strain, and you trigger arm should be down not straight out.

And never anticipate the recoil, or you will throw your rounds down range.