To me, learning how to use youtube has never been a big task as I was used to "Graphic User Interfaces"(GUI) before. Very simple user interface means just minutes to learn it. For a person from a computer background you will take minutes nay seconds to learn it. What if you are not well tuned with using computer?
What if you are a person who has not had enough exposure to computer GUI before? It will take sometime to even get the hang of using the mouse. We take it for granted now a days that, when a person touches the mouse he would be able to handle it instantly. I found out that, it is not the case. My mom has started using the computer off late. She is not good with GUI or neither the interface. She finds it difficult to move even the mouse. Her hands take the mouse arrow in an elliptical orbit as compared to the parabolic one we use. :)
One day when I came back home from office, she was watching some devotional songs on YouTube. She did surprise me with her computer handling skills on that day. :) She has improved leaps and bounds :)