Usually trading with demo is actually good but for a quicker process or fast learning methods I wouldn't encourage someone to use their demo instead it's better to at least spare little money to trade in real account because Demo and Live accounts aren't operated the same way, there is much difference when you trade on both realistic accounts and Non-realistic account, you gain more life experience compared to when you are trading on demo and of course you wouldn't be that focused on demo compared to how you be careful while trading with real money, I am talking out of experience.