I fully agree. On the other hand, you might be pointing at a solution. There is plenty of material out there on many subjects at many different levels. Maybe something as simple as a reading guide could improve the situation quite a lot. Possibly we can do that as a joined effort here (e.g., on the wiki channel). Steps to take:
- Find the links
- Characterize them (topic, level, maturity, audience, …)
- Assemble (a) reading path(s)
- Merge them? Involves copyright …
Of course, the Tutorials menu on the home page is already a start.