There's some HN discussion about the new release:

http://news.ycombinator.com/item?id=2059909 http://news.ycombinator.com/item?id=1181589

And another link I found helpful:

http://batsov.com/Emacs/2011/08/19/a-peek-at-emacs24.html

But yes, your plan is a good one. Start by running

  C-h t

to get the native tutorial, then ramp up from there. I'm afraid I don't know many good online tutorials as I work with Emacs power users, but Stack Overflow has always been quite helpful for learning Elisp.