Apart from having this indicators you should know how to use them at the appropriate time, Rsi, MACD, FIBONACCI, BOLLINGER BAND, this are cool indicators to make use of, and another thing you should learn apart from using the indicators, learn the time frame too.
The time frame is my other problem, I was wondering from where to where. Many people start & stop drawing on an unknown time that I couldn't figure out.
I know how to read RSI & MACD, but Fibonacci still an obstacle for me. Other signals like S&P 500, Bollinger, etc. are another plus to analyze and get more accurate for the own prediction.
And yes, it is very important to chose the coin and time to invest.