Selling rate is the rate at which the bank sells the foreign exchange to the customer. Buying rate is the rate at which the bank buys the foreign exchange from the customer. Always buying rate is greater than the selling rate and that is how banks earn profit.
Then How can an Individual earn profit through FX Trading ??
i think you should go to the babybips school and you will find a lot of helpfull informations
Yup, Thanks, I moved there only 
Welcome to the forums!
Forex trading requires learning haha, but once you get a grasp of some of the basic concepts things will make sense. For examples of how some have been making money through the FX market read some of the systems that are being tested on the forums.
Great resource here for getting started.
Good luck in your trading!
If it’s the same, how can bank makes money?
U really think banks/brokers provide u the facility and help u do the trading all for free of charge?
Haha in an [I]ideal[/I] world yes. Unfortunately utopia ceases to exist.