This is a nice addition to other Node.js tutorials. But a few gripes I have: 1) No explanation of callbacks or event-driven architecture 2) Mac specific instru

This is a nice addition to other Node.js tutorials. But a few gripes I have: 1) No explanation of callbacks or event-driven architecture 2) Mac specific instructions only. Why would you limit your tutorial to a specific brand of hardware? Please include Linux instructions or at least a link. Not everyone who wants to code wants to overpay for their hardware. Macs are great, and they are priced as a luxury good, and are consequently completely unaffordable for developers in the non-Western world. I recommend that folks new to Node check out some much more in-depth tutorials that actually explain callbacks and event-driven design. Google for "Mixu's node book" and "The Node Beginner Book" for a more in-depth introduction to Node.