It's important to know that there is such a huge difference between the two - we had our youtube videos well before our classes and yet our friends kept asking for more! An online class is so much more indepth than a free tutorial will ever be; there is so much research that goes into what we present to you to not only teach how but also the why behind it.
Don't forget your time is valuable! Why google, research, and figure things out through trial and error when you can quickly have all of the information you need, well researched and with the correct art fundamentals right at your fingertips! :) Our one on one feedback is also a crucial difference; our online classes are like having a private tutor or a class at your local store - youtube can't tell you what may not be working for you.
Also, how can you learn something if you don't know you need to learn it? We are here to help :)