These are my notes from the YouTube video below about using Org-mode in Emacs.

• To create a bullet point: Alt-Enter
• To make a sub-topic: Alt-Enter, Alt-Right arrow
• You can move a (sub-)topic up or down the list: Alt-Up arrow; Alt-Down arrow
• To mark an item as TODO: Shift-Right arrow
  • To mark item as DONE: hit Shift-Right arrow again
• To unmark an item TODO: Shift-Left arrow
• To create a check box: Type – [ ]
  • You can mark the check box: Ctrl-C Ctrl-C
  • In the main item, type [/] and then Ctrl-C Ctrl-C.  It will now show the fraction of checkboxes marked.
  • Alternatively, type [%] and then Ctrl-C Ctrl-C. It will now show the percentage of checkboxes marked.
• Set a deadline: Ctrl-C Ctrl-D.
• Creating tags for item: Ctrl-C Ctrl-C
• Hide content of an item: Tab
• Shift-Tab will cycle through the different levels of indentation