I find this a useful method of teaching, but that is because I am more visually oriented when it comes to learning. (Show me). For some people they need a book with step by step instructions on how to do it, in order to learn.(first do this, then this, etc). Neither method of teaching or learning is wrong, it is what it is. Some people want one method of doing it, some people want lots of methods, so that they can take and combine bits and pieces to make their whole method. Once again not wrong, what works is what works and it will be different for different people.