Same. I have a vanilla Emacs install and the Lisp Intro doesn't seem to be there.

You can find it online though:

https://www.emacswiki.org/emacs/EmacsLispIntro

Edit: I'm on an Ubuntu derived distro, so this may be the issue:

https://emacs.stackexchange.com/questions/48211/emacs-manual...

Edit2:

Yeah, at least for me that was the problem. This fixed it:

sudo apt-get -y install emacs-common-non-dfsg

Don't use the quotes for the phrase, just type it verbatim. If that still doesn't work then either the info page isn't installed (weird) or something else is up. You can also, from the first info page at C-h i, type "C-s emacs lisp intro" which should bring you to it. And again, if it's not there then something is wonky with your install.

Are you using Debian, and if so, do you have the non-free documentation installed (emacs-common-non-dfsg)?

Something must have clearly gone wrong with the install (or perhaps there is a minimal install version...?) If this were Gentoo, I would suggest that perhaps the "doc" USE flag was not enabled?

    C-h i d m Emacs Lisp Intro RET

Need that d to take you back to the top directory if you happen to be browsing some other info manual already.

It should on a standard install.

If you have things remapped, try M-x info, then search for "Emacs List Intro" but it should be near the top anyway.

Takes me to information on keymaps