Of course. Classes are usually 2-3 times a week. That is enough in the beginning, but as you progress you need more information, and more training. Also, being in a class means that a lot of details get overlooked, or the instructors can't give you specific details because it would make the class to boring. This platform is an excellent way to review information, learn all the techniques in great detail, and focus on what you need.  You also can watch them anytime.