The very first thing you should to understand is that trading is a very broad activity. I believe that you have to start from the choice of what activity do you admire more. There are actually forex trading, crypto trading, stock trading and so on. Then you should watch/read special learning content (you can find it in the internet or buy books in a book store). The main mistake which is caude by novice is a rush. Don't rush, be patient, it's the main rule. Learn a bit per day and then you may start practicing. Afterwards, you should choose a platform and elaborate a trading strategy (it's very important because your success mainly will depend on your strategy). Never stop learning, trading is so broad than even professionals don't stop learning something new.