Good to know in advance

• org-lint walks through the current org file and shows the loose ends.
• C-h o org-mode-map is a list of the current org mode settings.

Helper to read the org mode file structure

• at github: PyOrgMode, unmaintained; orgparse; org-parser.
• python orgmode project at pypi.org
• Type C-h o org--parse [TAB] to get about 80 internal org-...-parse functions

C-h i opens an info buffer with manuals of emacs and the installed packages. There's a lot of additional information at index sections of every particular manual. The org-mode Manual, for example, offers the main index, the keyindex, and the command and function index.

Apart from these indices most (all?) of org-mode's functionality is documented in the help empire of emacs. You can

• call M-x customize and admire the lucid tree of all variable options and groups
• call M-x customize-[variable | option | group] for enter into a status line dialogue
• C-h v, the equivalent of M-x describe-variable.
• C-h f, the equivalent of M-x describe-function.
• C-h o, the equivalent of M-x describe-symbol.
• C-h k, the equivalent of M-x describe-key, Check out, for example C-h k C-c C-c!
• With M-x describe TAB you get insight into the undescribable multiversum of emacs descriptions.

So, we're supposed to type C-h v xyz if the manual says “for more details, see the variable xyz”. And there we'll see the famous docstring, too. And if the the resulting buffer shows a link to a corresponding elisp file, another [TAB] [RETURN] will guide us to the appropriate line.

[Check] emacs special: You can get infos about particular keyword in M-x bindings by preceding the keyword with a multiple dashes. For example M-x --keyword expands the status buffer with all completions containing your keyword after the second dash.

See ErgoEmacs for a possible emacs outline or breakdown. Or the emacs books from Cameron [Cameron2004] or Hahn [EmacsHahn2016].

Section 15.6 of the org manual, Summary of in buffer-settings, lists some #+ keywords. Another set of keywords are listed at Section 12.3 [[org#Export settings][Export settings]. A complete list depends on the currently loaded packages and is invoked by M-<Tab>, i.e., <Alt>-<Tab> or <Esc>+<Tab>, after a #+ at the beginning of a line.

Online worg documentation for org hooks, commands and options. Check their currentness in the git repository at git.sr.ht.

📂 org-compat.el contains information about all compatibility settings.