This page is a overview of elisp references.
For a short encyclopedia styled intro about elisp, see: Wikipedia: Emacs Lisp.
An Introduction to Programming in Emacs Lisp by Robert J Chassell. amazon Available at: http://www.gnu.org/software/emacs/emacs-lisp-intro/.
This books is for those who never programed before. This book is bundled with emacs since version 22. To view it in emacs, type 【F1 i】, then click on the “Emacs Lisp Intro”.
The official doc for elisp is the GNU Emacs Lisp Reference Manual, by Robert Krawitz, Bil Lewis, Dan LaLiberte, Richard Stallman, Chris Welty, Robert J Chassell and others. amazon
To view it in emacs, type 【F1 i】, then click on the “ELisp”. A pretty-formatted HTML version is available at: GNU Emacs Lisp Reference Manual.