I learned it from the manual built into Emacs itself, which you can access by entering "C-x r" and then following the link to "Emacs Lisp" near the top. I had l

I learned it from the manual built into Emacs itself, which you can access by entering "C-x r" and then following the link to "Emacs Lisp" near the top. I had literally never heard of Lisp at the time I stumbled on it. But the way that I actually got competent enough to do anything interesting with it was to learn Common Lisp, because they are similar in that learning to solve problems in Common Lisp lets you do the same in Elisp. I learned Common Lisp by reading Practical Common Lisp by Peter Seibel and writing small programs. I would really recommend spending a little time learning both dialects because it's easy to learn "just enough" elisp to configure your setup but not enough to appreciate what you can do with it.