More resources for a quick start:
brew install emacs --HEAD --use-git-head --cocoa --with-gnutls --with-rsvg --with-imagemagick brew install emacs --HEAD --use-git-head --cocoa --with-gnutls --with-rsvg --with-imagemagick
http://emacs.stackexchange.com
http://www.reddit.com/r/emacs/