Let's try a simple move on trading. Just buy a bit of bitcoin, then wait for the price to rise above the price you bought. And if the price still below your first buy, don't sell it no matter what. You first need to learn the basic.
That is true, but if we want to become a professional trader he must start doing something cause collecting only a knowledge in theory is not enough to make any good steps here, he must do some moves on market and at the same time get more and more knowledge.