Yes, you really have to know the knowledge, it's possible for you to trade, you don't know the knowledge, it's possible for you to open a position without knowing your direction and goals, you all have to use knowledge because when you trade without using knowledge, maybe you're gambling instead of playing something that makes you consistent. therefore you have to be able to differentiate between gambling and investment, therefore we have to use knowledge, study whatever knowledge you like, study whatever knowledge you think can bring you consistent profits. So don't be too hasty to open a real account.