I follow some rules. Am not sure if they will work you for everyone but these are the basics.
1. Keep it simple. Once I tried to gather as much info before start trading. Many indicators, many news, vast analysis made me paralyzed to trade.
~snip~
I don't agree completely with your first point.
keeping a knowledge of fundamentals through news never hurts.
Coming to indicators, having knowledge of various indicators always helps.
I tell you why.
Usually, no indicator works alone. There is a need of a combination of indicators for reaching to a conclusion about any trend or breakout. You can only do that if you have knowledge about various indicators. With continuous trades, then you can make distinctions and can go with the combination which best suits you.
Thus, learning various indicators is crucial.