SQL Server Learning Tree

We are working towards developing a Center of Excellence around Application Platform and Database technologies. For the efforts, in continuation to my previous blog on SQL Server Learning framework, we are planning to work on preparing a complete SQL Server Learning Tree. This would be a generic learning framework, covering the most common topics irrespective of any version number, but assuming the latest version information in case of any conflicts. This tree has many branches (i.e. areas of SQL Server that we want to explore more, like deployment, operations, management etc.). Each branch will have several leaves (the topics to read, like for deployment branch, we can have installations, setup, configuration etc.). A rough sketch for such tree is already prepared as a startup.

Would like inputs on making this more versatile and adaptable to different categories of people having various expertise levels.