Indicators are very important, and they all have different usage when it comes to making your trading strategy. Its hard to recommend the basic indicators especially if you are not yet familiar on trading, try to learn first how to trade and read every indicators and know their functions, you might be more effective if you have knowledge on them. MA, SMA, FIBO, RSI are the common indicators for me, and I rarely use other indicators just to confirm the trend but still its helpful sometimes. If you want to be a trader, make time for this.