Alright, we have the foundation of the Knowledge base and we can start building it.
If you go to Knowledge base - The Social Music Network you should see a different style of navigation column. If not, hard-refresh your browser to remove the cached page.
Because we are starting from scratch, we can have just this category for now. If we ever need subcategories, we can create as we go.
The content of de navigation bar is defined by this page that only mods and admins can edit: Knowledge base index. I just listed something to test the plugin. Changing the sections and the labels of the pages is as easy as editing that page.
I have created one just to test the navigation bar and get us an idea about how we will crowdsource the knowledge base: Grants for music makers and friends. And yes, as soon as I linked it on the Index page, it appeared with its label on the navigation column.
Well, in technical terms that’s pretty much it. Now we “only” need to create pages. 
This has also made me realize what perhaps was obvious from the beginning: a taxonomy is as good as the content it organizes. Therefore, I suggest we add the pages created and we organize as they come.
What do you think? Questions, suggestions?