see http://docs.freebsd.org/44doc/usd/12.vi/paper.html

probobly should cover a summary of sections:
1.5. Arrow keys 
1.7. Getting out of the editor 
2. Moving around in the file
3. Making simple changes 
5.1. Writing, quitting, editing new files 

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Notes from Jacob K.:

:w  write

:wq  write, quit

:wq!  force write, quit

:q!  quit, ignore changes

dd  delete whole line

:y  yank the current line

p  put after the position of after the line

x  exit, saving changes

i  insert before the cursor

a  append after the cursor

/ - search forward for whatever follows the /

?  search back for string

1G  move to first line of file

G  move to last line of file

nG  move to n line of file

:n  move to n line of file

: - enter a command

:r  read file in after line

ZZ  exit and save changes if any have been made

:set number - sets lines numbers on each line

:set list - TODO