I feel that you should start with learning economics, i.e. what the demand and supply are and everything which is connected with the fundamentals of economy. Some might say that it is not important for trading, but I noticed that the understanding of such thinks helps to analyse the news and come to the right conclusions. I'll draw you an example with OPEC related news about oil extraction rates. The mere understanding of supply and demand will help you understand the consequences which this news can have on the market.
The next thing you've got to learn is the market that you want to work with. You should learn forex if you want to trade forex, crypto if you want to trade with this instrument and so on. All the markets behave differently in the same economic situations and you've got to understand them. If we talk about forex, there are so many different resources online which are available to everyone free of charge.
After it, you can go to understanding more technical stuff like platforms, indicators, charts, pending orders and so on. These tools are a must to every trader who wants to make decent consistent profits.
The last but not the least is learning psychology. It is an open secret that emotions play huge role in decision making process, so, your aim is to control your emotions in the most effective way in order to remain sober and sensible before opening this o that deal.
