efaq: Emacs Lisp documentation
3.4 Where can I get documentation on Emacs Lisp?
================================================
Within Emacs, you can type ‘C-h f’ to get the documentation for a
function, ‘C-h v’ for a variable.
For more information, the Emacs Lisp Reference Manual is available in
Info format (Emacs Lisp (elisp)Top.).
You can also order a hardcopy of the manual from the FSF, for details
see the FSF on-line store (http://shop.fsf.org/). (This manual is not
always in print.)
An HTML version of the Emacs Lisp Reference Manual is available at
<http://www.gnu.org/software/emacs/elisp-manual/elisp.html>