I would agree that the highlight in red between beginner and experienced lessons in the core learning system are a bit confusing. I am one of those who would prefer to have exclusive webpages between beginner and experienced lessons on the core learning system.

Overall the content is great and so are the teachers... in fact I even extended for a second year (after Fundamental 1 and 2, I am now on acoustic level 1).

Nevertheless, it took me time to get used to the website user interface which is not the most intuitive, there are areas of improvements for the website and Apps.