This Using Technical Indicators for Stocks and Options Trading playlist has a lot of videos explaining different technical indicators, some well known and others not so well know. The supertrend indicator is one fairly unknown indicator based on the more know Avwerage True Range (ATR) indicator. ATR is one of the first indicators that you should know, since it is an alternative to Parabolic SAR when sette stop loss points.
RSI is an other well known technical indicator. Here is one use of the indicator.
Here are two additional videos on the supertrend indicator.