Using screencast during your demo in practicing your coding can increase your learning. Not all the time you can remember all the process. Long process must be recorded in order to get the right pattern. If one procedure is forgotten it will effect an output of errors.
2 things to remember in screencast
One is to educating your self mastery and the other one is sharing your ideas online using youtube. We always need someone to help us visually to educate our self. With the help of screencast your are giving benefits to your self esteem and contributing to the new babies who are starting to learn more in the web.
If they need more then they should enroll to private class in your website in online courses.