I also often watch videos at Youtube and it helps me a lot in trading. However, you should be selective because they are not always accurate and can help you improve your trading. Personally, I'm usually only interested in the advice of good traders in this market because they will give you a lot of good lessons and will share some of the strategies they often use.
I agree too, video tutorial ls are the best in teaching newbie traders the practical aspects of trading, they can read up about the basics and things they should always avoind through blogs and e-books but they sure need videos to take them on how to go around trading adventure on exchanges. By the way, the learnings are just to give a good foundation as they will learn to make their pwn choices over time