But a mentor can not be besides us all day long because he have his activities. That is why we must learn from other people and other sources so we can improve our skills better and not rely on him. If we can have a good skill to analyze the market, we can enter to the market anytime we want and the chance to make more profit will be bigger.
A beginners should learn how to trade with right and he must spends more time to learn more from other sources. He can not wait for his mentor gives a sign to buy coins but trying to analyze the market to find the coins. That will help him to improve his skill in trading so he will not have a difficulty to search for the coins that have potential to increase.
The one who will teach trading should not tell when to buy and what to buy, otherwise there will be no sense in such training. After training, the student should start trading independently (preferably with small amounts of money), he will of course make mistakes, and the teacher's task will be to point out where the mistakes were made, so that it is clear what was done wrong.
And then everything will depend on the student, if the mistakes are repeated again and again, then most likely such a trader will not be able to become successful...
Only by trial and error, a person can take the lead and become better than his teacher.
Nothing beats the good old practice, albeit, with risk-management intact to save your depos for the future.