WebLearn
My hunch is that flat hierarchies with the content here are inherently a 'good thing'. Therefore as a general rule I'd suggest adding pages in this area prefixed with WebLearn. Only when a given topic gets too big should sub-pages be created for it. This is what I've done with the topic WebLearnCopyUI anyway!
[:WebLearnDevelopment:Development] - index page of topics relating to WebLearn development issues.