Yes, the tab would be immediately doable (as displayed here <http://mockup-sidebar-search.tiddlyspot.com/#GettingStarted>, by Tobias apropos another discussion <https://github.com/Jermolene/TiddlyWiki5/issues/1066#issuecomment-65936620>). But I think that most of these things (and what I'm about to show below) we already have almost all the pieces for. But then, I'm no programmer ;-)
What, as you put it, "sort of help" is IMO not really an issue - I mean, you can ask that same question about the help we are currently providing. The answer is probably; the best kind of help we've managed to scrape together for the moment. Anything is better than nothing. Anyway, over night the ol' brain decided to bring forth yet a touch; to use the sidebar Help tab itself as the area for this help presentation! Here are some furtherifications: <https://lh6.googleusercontent.com/-JzvH0eJ_7cE/VIhJv2-qcQI/AAAAAAAAO_0/mFe5u-uE_WE/s1600/empty_welcome_help_clicklink_help1.png> <https://lh4.googleusercontent.com/-SIBF_SWYeiA/VIhJU2q4TcI/AAAAAAAAO_s/lJf4_cSyIzM/s1600/empty_welcome_help_clicklink_help2.png> <https://lh5.googleusercontent.com/-Exm3O3K0vUU/VIhJLT3rvNI/AAAAAAAAO_k/cM2UWBdbJT0/s1600/empty_welcome_help_clicklink_help3.png> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.

