For a guy being "fearless" you sure do worry a lot. How do you think the majority of us learned through in this hobby. Go try yourself and learn from your experience. No one is going to be able to teach you how to talk to girls when you're face to face with them like the incel I told in another thread. If you've already decided on a girl, go see her and go with the flow. If she sucks move on to another till you find the right one that clicks with you then you have your regular till you move on to the next.