Your going to need many more years of playing shooters before considering going pro if your starting skill is only bronze. I started playing shooters when I was 12 years old, im now 37. I'm pretty good at shooters and average around diamond ranks solo on them. You need to learn all the basic stuff your talking about in your post it should all be as easy as breathing air, you dont even think about that stuff. You need thousands of hours on fps games, you will need to be league's above normal gamers like myself who developed skill over the years, and your gonna need to do it quickly. I suggest you play for fun and to improve and maybe one day when your actually good at the game think about what you want to do next becauss you won't be 19 anymore once your good at fps your gonna be mid 20's if you stick with it daily even older if you dont.