I think you have to be patient in trading if you want to be a professional trader. You need to be very active to research about the coins chart, market movements, buy and sell wall! You have to start trading first with a low amount, then after doing trade gradually, you will know how the trade works. I appreciate that you want to learn first, so read sources and be practiced!
To become a professional trader must be able to analyze the price of certain coins, for example bitcoin, where the trend is in the next few days because it will become a benchmark of execution so that profits can be achieved.
Of course to be able to analyze the truth there must be a benchmark, for example understanding about the regulation of the world financial market on bitcoin policy, understanding the opinions of credible experts, participating in bitcoin forums that contain input from traders, etc. which will be summarized in one individual and intelligent policy so that the results are close to the truth.