I received an email a week ago advertising a free 1 year membership to Learnable.com - normally $144/yr, which includes various courses on HTML, CSS and programming plus books on the same subjects published by Sitepoint (they're awesome books!) - just for setting up New Relic with an app.
To keep things simple:
0 - Install/configure Node.JS
0.5 - Write an app OR Download someone else's
1 - Sign Up to New Relic (Expires October 31st)
1 - Sign Up to New Relic (Expires November 30th)
2 - New Relic Dashboard -> Applications -> Add More
3 - Select Node.JS and follow the steps
Once your app is sending/receiving tracking/analytics data in New Relic, you'll receive an email with a link to click to confirm you're human, followed a few hours later by a redeemable voucher for a 1 year free Learnable.com membership.
I'm a web designer/developer but have very limited experience with Node.JS so I probably won't be able to answer any technical questions - sorry!
Enjoy. :)
Note: If you're a uni student, you're eligible for four free years of access: https://learnable.com/students