Forex is a very vast and complex field. Spending 6 months on a demo account does not guarantee that you won’t have losses in the future. Regular practice and learning is quite important. When you for a long time you automatically understand your trading strategy and start to gain profit. As far as money is concerned, do trade with positive emotions because sometimes emotions interrupt your decision and you land with making losses. Initially start with a small amount and after getting experience increase the amount in order to make large profit.
The more your practice, the more you learn.