Welcome to the enquiries forum. this is the place to ask questions relating to our books, our courses or the school. If you have a more specific problem relating to aviation theory, check out the Question and Answer forums. That's the best place to post your technical questions.
Online aviation theory by Ron Newman -60 years in aviation.
I haven't looked at Ron's training material so I can't comment there. However, I have known him for many years dating back to the late-70s when he set up the Vicpol Airwing helo operation as engineering manager under Nev Balding and I was an Industry design engineering consultant to the organisation.
A fine fellow, is our Ron.
Engineering specialist in aircraft performance and weight control.