Nice post by Xray...
There are Many schools in TA,
1. Classical TA -Candle patterns, Chart patterns ,known indicators like ,RSI,MACD,Stochastic ...
2. Price Action (YTC School),Structural Pivot (MP's and VP's) aka Bill Williams school
3. TDST - Demark analysis has proved to be extremely valuable in terms of finding the terminal point of trends
4.Elliot Wave Theory:
5:Market Profile and Volume Profile.. they may be much more
Main Reason why trader fails in market is his inability to adopt to a school of learning,even he adopts to a school repeated failure in trades ,drags him to learn others schools,which eventually leads him to make a super system with all good qualities of respective schools...which is not possible ,many years will be wasted in this process
Significant failure stories are also through Training/Mentorships from Twitter Gurus, aiming to become successful trader just by attending single day seminar, off course there may be 1 or 2 good Mentors /Trainers, but at large there are snake oil vendors
Understanding that one cannot adopt to every school of trading itself is like knowing everything.Until he defines entries and exit rule without ambiguity he will not move anywhere !!,