
OK, (quick sketch later) go flat in Map view. Use links and the
many affordances of Maps. Previously, I assumed you'd be using Outline view as your descriptions thus far implied a hierarchical point of view. albeit only a few notes, but it tok seconds to turn my earlier sketch around. Either way these were made from the same TBX - though I did promote the books out of the authors to make the Map.
I think - and I don't mean this combatively - you're encountering a common problem most of us share of feeling we have to see (an approximation of) the final structure before we feel confident to more ahead. My early TB use certainly suffered from this. Now I both start piling in information
and structuring as I go. Sure, some TB experience teaches you more things you might do at outset but it doesn't stop one 'just' getting started. IOW, eventually one runs out of excuses for not starting or getting stuck in analysis-paralysis.
In parallel with the above in my day job I'm constanly being asked to "just build an example so I can tell you if it's what I had in mind". Problem is, building that is most of the task's work and invariably the answer is "no - do it differently", so pretty much everything is thrown away; wasteful in time if not money. I can't say it often enough, TB's flexibility allows you to side-step that trap and structure as you go avoiding either plan-everything-before-starting-paralysis or only-know-it-works-when-finished-and-then-do-over syndromes.