There are many indicators to choose from. The most popular are Moving Averages, Bolligner Bands, MACD, RSI, CCI, Stochastic.
You will need to learn about the indicators you would like to use determine if they are leading or lagging. Find out if they will work well with your strategy and essentially increase your performance.
Don't be fooled into thinking you need to use indicators, you don't, and if you do I would advise using no more than 3.
You should first focus on price action as that tells you exactly what price is doing at that very moment!
If you are new to trading personally I would start with a trend following indicator like a moving average and an overbought/oversold indicator like the RSI.
Use the indicators as filters not for specific trade entry. For instance if a sell trade has presented itself according to your strategy you can use the MA and RSI for for further confirmation. A rule could be to only enter if price is below the MA and is showing a reading above 80 on the RSI.
As you trade you can refine your strategy and pick the right indicators that work for you.