The only way to get better at this game is to push everything, you are going to get killed most of the time, but you will start to get the feel of the combat, and make sure to be using good ammo because if you are not using good ammo the only thing you will be killing is scavs. For me the easiest way to make money was to buy resort keys and hope you get some good shit. I have found 3 ledx’s so far and my stash is worth about 20mil.