It is very convenient to work out your strategy, on a demo account you can immediately understand where there are problems.
Usually, in demo start with big capital like $5k, maybe better learn in demo uses amount capital equivalent with money that will be invested in the real trading account, let say if trader have plan start with $100, in the demo they learn uses $100 and look the progress, if ready, a trader can try to use the micro account or cent account, first time in real trading I use micro account FXOpen
Yes, if let say will use FXOpen broker then the demo account can start with creating an account demo on this broker, its to introduce the platform, leverage, value per pips, spread, etc.
Demo trading is very beneficial. Fore newbies, can learn and for experienced traders, they can use demo account to backtest their strategies.
Yes, of course, demo account like as the first stage before going to next stage, if in demo account seriously to finding reliable trading strategy, it worth, but most novice trader only treats demo like as playground, for fun because free of the risk.
Quite a lot of good things have already been said about the demo account, and the conclusion suggests itself that it is necessary to work with it.
Maybe the most trader use demo account with a high initial deposit like as $5000, but when start in real trading only uses $100, I think it's good if learn in the demo also uses amount fund that will be invested later in real account.