Demo accounts are an important tool for traders to practice and refine their trading strategies in a risk-free environment. By using a demo account, traders can get familiar with a platform's features and functions, test different trading strategies, and develop their skills without risking real money. Demo accounts also allow traders to gain confidence in their abilities and build a track record of successful trades before moving on to live trading.
but instead of demo account micro is the good option to acquire perfect basic information , even though it is little bit expensive.
Definitely a good idea to get familiar using a platform using a demo. Paper trading also a good idea to a point but it can also give you a false sense of your trading and risk management capabilities as when real money is on the line most people have a tendency to trade differently and manage their risk and trades different than they do in paper trading. Even moving up the scale with real money can be very challenging mentally as most people are looking at the trades from dollar loss and gains versus percentage loss and percentage gains. For example in futures going from trading micros to trading regular futures and then going from 1 lot regular futures to trading 3 lot, 5 lot or 10 lot regular futures. If you can develop a robotic trading algo for your strategy that does the entries , exits and manages risk in a consistent fashion and do that in paper trading then conversion to live trading should be the same. With manual trading though--there can be a huge difference between paper trading and live acct trading as people have tendency to not stick to a consistent plan of entries, stop loss, management of risk and exits when live trading as opposed to paper trading.
I think that the importance of a demo account in preparation for real trading is undeniable. After all, no one knows for sure the quality of work of the trading systems, indicators or forex robots found on the Internet to immediately risk their real accounts when trading on them. In addition, any strategy found may require its revision, improvement or optimization to increase its effectiveness and it is better to do this on a demo account for free and without risks to your capital.