Press Control + ‘h’ twice then press ‘t’, or press Control + ‘h’ then ‘t’ to go directly to the tutorial.

Control + ‘h’ then ‘?’ (C-h ?) also opens Metahelp, press ‘q’ to dismiss.

The menu can be very helpful to learn common key bindings, use F10 to bring it up.

• Metahelp (q to dismiss)
  • C-h C-h
  • C-h ?
• Symbol Search
  • M-x apropos RET
• Emacs
  • Emacs Manual (C-h r or C-h i d m emacs RET)
    • info:emacs
• Emacs Lisp
  • Introduction to Programming in Emacs Lisp (C-h i m Emacs Lisp Intro)
    • info:eintr
  • Emacs Lisp Reference Manual (C-h i m Elisp)
    • info:elisp

C-h ? b

Display all key bindings

C-h C-h b

Display all key bindings

C-h b

Display all key bindings

C-h k

Describe a key binding

C-h c

Describe a key binding briefly

C-h m

Describe current major and minor modes

C-c C-h

show all bindings starting with “C-c” prefix

C-x C-h

show all bindings starting with “C-x” prefix

C-x c C-h

show all bindings starting with “C-x c” prefix

C-h e

show messages buffer

Info pages are a rich and reliable source of information.

C-h i

show Info Browser

?

list key bindings, press SPC to scroll

d

go to info directoy

m

go to a menu item

I

search in the indices of current document

TAB

next link

S-TAB

previous link

c

copy name of the current info node

M-x info-apropos

search in the indices of all manuals

s

regexp search document

C-s

incremental search forward

C-r

incremental search backward

n

next

p

previous

u

up

t

top of current document

q

quit (selects previous buffer)

Searching goes through multiple Info nodes, see (info) Search Text for more information.

C-s

incremental search forward

C-r

incremental search backward

C-M-s

incremental search forward (regular expression)

C-M-r

incremental search backward (regular expression)

C-SPC

set-mark-command (start selection)

C-w

kill-region (cut)

M-w

kill-ring-save (copy)

C-y

yank (paste)

C-x h

mark-whole-buffer (select all)

M-\

delete-horizontal-space

C-x (

kmacro-start-macro

C-x )

kmacro-end-macro

C-x e

kmacro-end-and-call-macro

See (emacs) Keyboard Macros for more information.

• M-:
• C-x C-e
• C-M-x
• M-x ielm
• M-x eshell

You really should known what each of these do (use C-h k to describe each key binding).

M-p

previous command

M-n

next command

C-c C-c

send interrupt signal

C-c C-d

close stdin (send eof)

C-c C-p

previous prompt

C-c C-n

next prompt

C-c C-l

show input history

C-c M-o

clear buffer

File variables are important to select and customize major and minor modes in a file-by-file basis, see Specifying File Variables

How to access/examine/inspect file variables? <elisp:(symbol-value ‘file-local-variables-alist)>, this variable may be nil, as it is best practice to remove them as they are consumed by their handling modes.

See also:

• Directory Variables

TAB / S-TAB

(un)fold

M-up / M-down

move a headline up or down

M-left / M-right

promote or demote a headline

M-S-left / M-S-right

promote or demote a subtree

C-RET

insert a new headline

M-RET

insert a new item

C-c C-w

move entries

C-c -

change list style

C-c / t

show TODOs in current document

S-left / S-right

very useful, depends on context

C-c C-c

context-dependant, toggle checkboxes, tagging

C-c C-o

opens link

C-c C-e

export menu (try ‘h’ then ‘o’)

C-c C-e C-s

export scope configuration

C-c C-z

take note

C-c C-t

cycle task states

C-u 5 C-c C-t

set 5th task state (or clean it if 5th is not set)

C-c C-,

org-insert-structure-template (e.g. insert being_src blocks)

C-c '

org-edit-special, org-edit-export-block and others

C-c $ or C-c C-x C-s

org-archive-subtree

• explict using angular/angle brackets: <info:eintr#Symbols as Chest>
• implict/nice/rich using square brackets: eintr: Symbols as Chest

My favorite scenes are (in this order)

1. The attack of the Rohirrim
2. Eowyn’s fight with the witch king
   1. this was already my favorite scene in the book
   2. I really like Miranda Otto.
3. Peter Jackson being shot by Legolas
   1. on DVD only

   He makes a really funny face when it happens. But in the end, no individual scenes matter but the film as a whole. Important actors in this film are:

   Elijah Wood

   He plays Frodo

   Sean Austin

   He plays Sam, Frodo’s friend. I still remember him very well from his role as Mikey Walsh in The Goonies.

You can make words bold, italic, underlined, code and verbatim, and, if you must, strike-through.

• [ ] an item
• [X] uset C-c C-c to toggle

• [-] Group 1
  • [ ] item 1
  • [X] item 2
• [1/2] Group 2
  • [ ] item 1
  • [X] item 2
• [50%] Group 3
  • [ ] item 1
  • [X] item 2
• [1/2] Group 4 (does not count subitems)
  • [X] item 1
  • [-] item 2
    1. [X] subitem 2.1
    2. [ ] subitem 2.2
• [50%] Group 5 (does not count subitems)
  • [X] item 1
  • [-] item 2
    1. [X] subitem 2.1
    2. [ ] subitem 2.2

• HTML
  • C-c C-e h h (M-x org-html-export-to-html)
  • C-c C-e h H (M-x org-html-export-as-html)
  • C-c C-e h o (C-u M-x org-html-export-to-html)
    • exports and open in browser
  • M-x org-html-convert-region-to-html
    • insert html in current buffer at point
• LaTeX
  • C-c C-e l l (M-x org-latex-export-to-latex)

• M-: then (info-other-window "(org) HTML export commands")
• M-: then (info-other-window "(org) LaTeX/PDF export commands")

Add this to your initialization script:

(setq org-todo-keywords
  '((sequence "TODO" "IN-PROGRESS" "WAITING" "WONTDO" "DONE")))

#+STARTUP: logdone

#+STARTUP: indent logdone

RET     Select the file at the front of the list of matches.
If the list is empty, possibly prompt to create new file.

C-j     Use the current input string verbatim.

C-s     Put the first element at the end of the list.
C-r     Put the last element at the start of the list.
TAB     Complete a common suffix to the current string that matches
all files.  If there is only one match, select that file.
If there is no common suffix, show a list of all matching files
in a separate window.
C-d     Open the specified directory in Dired mode.
C-e     Edit input string (including directory).
M-p     Go to previous directory in work directory history.
M-n     Go to next directory in work directory history.
M-s     Search for file in the work directory history.
M-k     Remove current directory from the work directory history.
M-o     Cycle to previous file in work file history.
C-M-o   Cycle to next file in work file history.
M-f     Prompt for a file and use find to locate it.
M-d     Prompt for a directory and use find to locate it.
M-m     Prompt for a directory to create in current directory.
C-x C-f Fallback to non-Ido version of current command.
C-t     Toggle regexp searching.
C-p     Toggle between substring and prefix matching.
C-c     Toggle case-sensitive searching of file names.
M-l     Toggle literal reading of this file.
?       Show list of matching files in separate window.
C-a     Toggle ignoring files listed in ‘ido-ignore-files’.

RET     Select the buffer at the front of the list of matches.
        If the list is empty, possibly prompt to create new buffer.

C-j     Use the current input string verbatim.

C-s     Put the first element at the end of the list.
C-r     Put the last element at the start of the list.
TAB     Complete a common suffix to the current string that matches
        all buffers.  If there is only one match, select that buffer.
        If there is no common suffix, show a list of all matching buffers
        in a separate window.
C-e     Edit input string.
C-x C-b Fallback to non-ido version of current command.
C-t     Toggle regexp searching.
C-p     Toggle between substring and prefix matching.
C-c     Toggle case-sensitive searching of buffer names.
?       Show list of matching buffers in separate window.
C-x C-f Drop into ‘ido-find-file’.
C-k     Kill buffer at head of buffer list.
C-a     Toggle ignoring buffers listed in ‘ido-ignore-buffers’.

;; reference: https://www.youtube.com/watch?v=odkYXXYOxpo

;; (eval-buffer)
;; (main)
;; M-x edebug-Go-nonstop-mode RET (or simply G)

(require 'edebug)

(defmacro when-symbol-match (regex sym &rest body)
  `(when (string-match-p ,regex (symbol-name ,sym))
     ,@body))

(defun list-symbols (regex)
  (let ((lst))
    (mapatoms (lambda (a)
                (when-symbol-match
                 regex a
                 (push a lst))))
    lst))

(defun main ()
  (edebug-instrument-function 'list-symbols)
  (message "symbols: %S" (list-symbols "^file.*non.*"))
  (pop-to-buffer (get-buffer "*Messages*"))
  (other-window 1))

emacs -Q --eval '(load-theme (quote wombat))'
# or
emacs -Q --eval '(load-theme (quote tango-dark))'