i really laughed when i found out that there are still many people who are willing to spend hundreds or even thousands of dollars just to join a trading seminar even though the knowledge shared there can be obtained easily on the internet today or directly by meeting a trusted personal mentor. Learning autodidactically on YouTube is very good, but it's even better and more effective if you learn directly from a trusted mentor, who already has experience and a good reputation in trading.
We should take help from the mentor at start but with the passage of time we have to learn because taking help from mentor will require charges and if we give charges for whole of the life to mentor then we can put it in trading or investment if we learn from our experience.
If someone is newbie and follow his mentor then there will be low chances of loss but mentor can also make false decisions because market is not known by mentors also but he is doing everything according to the market prediction and his experience.