Thomas,
Unlike some other open source projects that have funding to support an entrenched hierarchy of full-time assigned roles, TiddlyWiki uses a much broader, egalitarian approach where the entire community is encouraged to support and help each other find practical solutions for specific problems.
If you ask *specific* questions, especially ones for which you have an actual use-case in mind, you are likely to get much more helpful and informative responses from the TiddlyWiki community.
In that regard, your extremely terse initial question was simply:
In response, Jeremy provided links to the *available* documentation:
http://rboue.tiddlyspot.com/#SocialCalc%2Fintroduction
https://www.socialtext.net/open/socialcalc
Note that you did *not* indicate that you were seeking "non-programmer" documentation. You even referenced the "developer's site" in your initial question, giving a further impression that you were looking for technical implementation details, rather than information for end-users.
Unfortunately, rather than expand on your initial question in hopes of getting a better (more useful) response for your needs, you simply complained about the quality of the existing documentation... to which Jeremy correctly responded, asking you to clarify what kind of information you are actually seeking.
Your follow-up response was a similar lament about needing a "document writer" specialist in order to provide simplified end-user instructions... for one specific TiddlyWiki application... that was first implemented many, many years ago... using TiddlyWiki Classic.
Then... you inexplicably abandoned further inquiry about SocialCalc (I guess you weren't really that interested in it?) to toss out a compliment about the "easy to understand" (but entirely unrelated) Table of Contents features of TiddlyWiki5.
This community is remarkably eager to help each other if you give it even half a chance. So... at this point, Jeremy's question remains: "What were you after?"
respectfully,
-e
Eric Shulman
TiddlyTools / ELS Design Studios