Online skating tutorials tend to have several major problems (which actually make them unsuitable for use by certain groups of people).
The first problem commonly associated with online skating tutorials is in the fact that they lack practical components. Yet when all is said and done, skating is not the sort of thing you can master theoretically: you have to do it practically for a while, before claiming mastery.
The second problem commonly associated with online skating tutorials is in the fact that the lessons in them tend to be presented in a non-coherent/inorderly/unstructured manner.
The third problem commonly associated with online skating tutorials is in the fact that they tend to lack in terms of comprehensiveness. This is a particularly big issue with the free online skating tutorials. But you can often get more comprehensive tutorials by visiting the sites where the tutorials are offered at a fee. To sign up with such sites, you are typically required to sign up for email (like, say, sign up for Gmail as per the directions available on this blog. Then you use that email to sign up for the tutorials. The email is important, because upon signing up, a confirmation link is normally send to that particular email address.