Fear of losing is a big concern for new traders. So, I recommend to invest what you can afford to lose. Otherwise it will give you extra mental pressure in trading.
Many traders come to market with the expectation of becoming rich overnight. But in reality, it happens opposite. So, try to learn and make realistic expectation to achieve in trading.
Demo trading is basically to know about trading and platform. Trader also test broker condition and service in demo account before investing in their account.
Scalping is risky. But trading is also risky. Scalper deal with small pips, so small mistake can cost you big. So, my advice is that learn, test and then invest.
New trader should ever think about trading without demo practicing. Lot of trader are losing money because they don’t know about the market. Some don’t even familiar with the platform.