The few times I have traded it was after listening to bitcoin podcasts for days and I felt I had some little incite. Believe me, listening to people discuss crytos for a few days is not enough.
Certainly watching videos helps to gain some knowledge about the cryptocurrency market, but it is necessary to go beyond that. One must study the fundamentals of the market, there is much material available for this on the internet. In addition, you can follow news related to development and market through other media, such as reddit, bitcointalk and some others.