G’day jollygoose.
The basic unit of “storage” in TiddlyWiki is a tiddler, a thing with fields associated with it: title, text, etc.
Everything you enter in TiddlyWiki goes in a tiddler, but whether something goes into a distinct tiddler or get added to an existing tiddler, you decide based on whether or not, and how, you want to componentize information
There is absolutely nothing wrong with having a really long Tiddler that you treat like a long document.
You only need to " exicse " into a distinct tiddler a part of a long document when you need to track that part independently, or have that one part showing in many places for different purposes or different “view aggregations” (so little chunks of info brought together in different ways for different information contexts.)
You get the most out of TiddlyWiki as you incrementally / iteratively / organically, over time, wonder: what I’m doing at this moment (repeating content everywhere, repeating multiple steps all of the time to do certain things, etc.), how can I make this less of a pain in the caboose, and what little TiddlyWiki goodie can I take advantage to help me out?
TiddlyWiki is flexible as hell: it is meant to fit you. There’s nobody else like you, and TiddlyWiki is for you to mold into your perfect fit.
Your perfect fit will change over time as you make discoveries, and you’ll adapt TiddlyWiki as your requirements/knowledge evolve.
The more info you put into TiddlyWiki, the more you use it, the more you learn: no waste of time.
You might very well be wasting your time it you aren’t doing what feels natural. Do what feels natural, don’t be afraid to make mistakes. TiddlyWiki is like a blank canvas to an artist, a blank sheet of paper to the writer at the typewriter. Just add content, and let the content you put tell you what needs to be organized / done differently.
Learn by doing, do as feels natural, change what/when/how/where you do when it makes sense.
Rock’n roll !