Market dominance for me is not an indicator as it is just basically a market cap comparison and it doesn't dictate if the prices will go up or down. As for your main question the indicators useful for you will depend on what kind of trading style you are into. There are MAs and EMAs more suited for day trading while there are also MAs and EMAs suited for the long term and that can be said to other indicators as well. But if you want to know the basics you must understand volume analysis as well as basic candlestick patterns as this is one of the fundamentals you need for technical analysis.