Emacs

Primers:
http://jamesthornton.com/emacs/node/emacs.html
http://mally.stanford.edu/~sr/computing/emacs.html
http://www.cems.uwe.ac.uk/~lrlang/java_html/emacsref.html

References:
http://www.gnu.org/software/emacs/ 
http://www.unix-manuals.com/refs/emacs/emacs.html
http://www.emacswiki.org/emacs-en

[Syntax: "C-h" means hold down [control key] and press [H/h key].]
[Syntax: "M-x" means ["meta" key] and [X/x key].]
[NB--"meta" key might be "esc" or "alt" or "ctl" or "option" or ...]

Command               ---- Description 
---------------       -------------------------------
emacs or xemacs       ---- Start Emacs or XEmacs. 
emacs new_file        ---- Create a new file.
C-h t                 ---- Start the Emacs tutorial. 
C-x C-s               ---- Save the file. 
C-x C-c               ---- Exit Emacs. 
M-x n                 ---- Go to n-th line.
M-w                   ---- Copy highlighted text. 
C-w                   ---- Cut highlighted text. 
C-_                   ---- Undo ([ctl]+[shift]+[-/_]). 
C-y                   ---- Paste text. 

vi

---------- intros, tutorials

quick intro style:
http://www.jerrywang.net/vi/

tutorial for newbies, site also has Man pages, AWK, regex, ...:
http://www.unix-manuals.com/tutorials/vi/vi-in-10-1.html

intro, more or less short, w/ some unneeded stuff.
https://engineering.purdue.edu/ECN/Resources/KnowledgeBase/Docs/20020202121609

Vi author, Bill Joy, speaks, lots of terse lists: set, command chars, ...
http://docs.freebsd.org/44doc/usd/12.vi/paper.html

Similar to Bill Joy's, but more intro-like, with handy (?) lists.
http://rootprompt.org/article.php3?article=305

long, w/ hand written cheatsheet:
http://www.gentoo.org/doc/en/vi-guide.xml

long winded, covers lots of more complex stuff, but difficult to look up quickly.
http://www.networkcomputing.com/unixworld/tutorial/009/009.html

---------- command lists, orgs

Cheat sheet, handy:
http://www.gentoo.org/doc/en/vi-guide.xml

Listing of VI and EX commands:
http://www.vmunix.com/~gabor/vi.html

List of vi commands (but missing ex part):
http://www.unix-manuals.com/refs/vi-ref/vi-ref.htm

---------- vi References:

http://thomer.com/vi/vi.html
http://www.vim.org/

Vi lovers, really good links:
http://thomer.com/vi/vi.html

adjuncts

regular expressions (brief, but with links to books):
http://www.unix-manuals.com/refs/regex/regex.htm