The best way to start Binary Options Trading is to get some practice with a demo account. With a demo account you can practice trading in real time with some brokers. You should have in mind that there is no way to duplicate the experience which comes with real trading.
The way how it works is very easy. With a demo account you can get a certain amount of fake money to start trading. You can use that money anyway you see fit. The platform which you will use for demo trading is the same platform which you will use when you are actually trading with real money, so demo trading helps you to eliminate the learning curve and any mistakes which you might make while figuring out how to use the software.
Demo accounts will differ from broker to broker and some firms do not even offer demo trading. But it should be an important part of your trading at the beginning.
An important thing about Binary Options Trading and generally financial trading is that you should never enter a trade unprepared. For the purpose to meet long term success, you must have a reasonable method of identifying profitable trades and a good money management system to make sure that you are never risking too much at any time or risking too little for the trade to be worthwhile. Trading systems can take a few months or longer to develop, and when you are forgetful of this area of your trading, you will probably not be successful. So please do your research on the asset which you are looking at and make sure that you have found a good entry point. This will make sure that you are being efficient at picking winning trades.