RE: feeling OVERWHELMED
Archery can be as simple or as hard as you want it to be. You are fairly new to the sport so don' t wory too much about getting wound up into all of the hoopla. The best advice that I can give you is to just settle down and concentrate on you and not what everyone else is doing.
Some of the things you listed are simple measurements that only need to be done once. The different tuning methods all get you to the same place but in different ways and one is not better than the other but more of a personal preferance.