Hi Raghav, I suggest you take a look at
www.stratiphy.io it's a free tool try build algo strategies with some good guides on there. It's invite only for now and only works on FTSE100 stocks, but you can build strategies for free, do backtesting and see what instructions to follow so it's a good place to learn and test our your ideas. If you follow a strategy that performs well in the backtesting period you can expect it to perform well for some time in the future, although there is no guarantee and you can lose money as well as make a profit.