3. Take your time to practice demo trading before going into real trading.
You don't really need to practice in demo trading because the experience and emotion you could get in real trading doesn't really apply in demo trading, you feel nothing when you trade on it because it's not your money. Sure, it's fine to try your trading strategy before implement it in real trading but it doesn't really matter if you don't have chance to try it especially with the endless amount of possibilities in real trade.
Yep, it's not a requirement but I think that it is a great help especially for those who are trying to learn trading. They are trying to get the grasp of trading in a real trading environment even if they are not using real funds to trade. Demo trading is a good feature that we can use, even traders with experience can use it to try techniques that they want without risking their valuable assets.
Not all newbies used demo trading account, some of them trades straight out of their money. We all have different financial capabilities and I understand the both worlds. It's still nice to have this option for newbies who want to practice without spending money.