gistfile1.txt

http://nodejs.org
http://search.npmjs.org/
https://github.com/dannycoates/node-inspector

Terminal:
brew install node
brew install npm

Those little guys will make for a beefy compile process, make sure you're plugged in. building the V8 engine from source can take some time.

Hit me up with questions once you've got it set up. The biggest mental hurdle when I was starting off was wrapping my brain around running JavaScript not in the browser. Haha. Also, look at CoffeeScript. It makes node much more enjoyable when you don't have to deal with the awkwardness of writing pure JS.