There’s a tutorial for using Emacs - the key combination to enter the tutorial is on the welcome screen (I think it’s “CTRL-h t” but I don’t have it in front of me). It doesn’t cover elisp.
There are two elisp manuals available via the info system (CTRL-h i), a reference manual and an introductory text. They’re also available in other formats and are online as well. The reference manual is kept current with every release. I’m not sure about the introductory text, but the core of elisp hasn’t changed (I think) since lexical scoping was made the default several years ago.
Edit: added availability of manuals in non-info formats.
DON’T BE FOOLED! This post was made by the cat! It wants narrower TV stands so it can knock them over easier when its owner forgets to feed it!