How do I find support and resistance?

Before I get in to support and resistance levels for a stock it is very important to understand demand and supply. The level/price at which the stock is in demand is said to be the support price. The price at which the stock is in oversupply is said to be the resistance. The following image summarizes it. Now when we talk about stocks especially those which are traded in F&O (Futures and Options ) we can use option chain to identify support and resistance and it works amazingly well when combined with charts. Here is latest option chain of NSE:SBIN for Sept 2019 series If we see the option chain you need to see the biggest candles the green and red ones these are the range for the series for e.g. Resistance from Option Chain The highest number of calls are written at 295 (the biggest red bar) so it is the strongest resistance. Support from Option Chain The highest number of puts are written at 275 & 250 (the second biggest green bar) but we are considering 250 as support plz read ahead why not 275. Why 275 is not the biggest support CMP is 273 so 275 PE is ITM. Thus OI change has higher Put buyers then writers. Historically big players do not write ITM options so the OI change at 275 is because of option buyers. Support Resistance for intraday trades Now if you want to do intraday the above ranges may not be very helpful so we need to find the immediate support and resistance which is based on the current market price of the stock. CMP of SBIN spot (spot means in cash ) is 273 now lets see the range around 273 from above option chain which shows that 265 is immediate support and 275 is the resistance since price is more closer to 275 chances of breakout/reversal is higher on the upside. So from option chain we can conclude that SBIN is a buy above 275 and sell below 265. But there is also a secret recipe which most newbies miss out when you enter in the long trade keep and eye on the call unwinding at 275 level. If calls do not unwind this would mean the call writers are not willing to give up and we may see some reversal. Support and Resistance from charts Guys frankly there are 100+ patterns to find support and resistance Weekly Charts The white colored trend line shows that stock is taking support on this trendline. Daily Charts Daily charts show that weekly support(white line) is respected and SBIN is trading in a rectangle pattern since last 2 weeks and a breakout in any direction will decide the next course of move. Other patterns some may see An imperfect cup and handle Inverted flag pole pattern as below These different patterns are used to identify support and resistance and predict breakouts. Believe you me for intraday PDL(previous day low) and PDH (previous day high) are the best support and resistance levels. Hope you now understand psychology of demand and supply behind support and resistance and are able to identify support and resistance from option chain. It took more than 1 hour to compile this answer your upvote is the only motivation :) Happy Investing !!!