What is Support and Resistance? How to use and calculate Support and Resistance?

What is support and Resistance?
     In forex trading most widely used trading concept is support and resistance. Trend is up then the price will reach the resistance level value as well trend is down then the price may come down and touch the support level value.

How to calculate support and Resistance level?
     Open, high, low, close values are used to calculate the support, resistance and pivot point values. The market rate is higher than pivot point level then trend is bullish otherwise bearish.Bullish trend will reach resistance and Beraish trend will reach support.

How to use support and Resistance?
     You can calculate hourly, daily, weekly, monthly, yearly pivot points and support, resistance levels. Approximately you can find today's market trend using yesterday’s high, open, low, and close.