Thank you for writing this. Keeping the target audience in mind, one thing you may want to consider is telling people how to stop the node server once its started (CTRL-C).
After teaching university, and now having spent the past few years teaching teens it's best not to take for granted what a student might know. Though I discovered that on all levels (not just by teaching the teenagers). When you say "absolute beginner", you've got to be careful not to make too many leaps.
The advice above regarding CTRL-C is good. An absolute beginner might not know this.
Also I noticed a leap in the "static file server" lesson. A beginner may not realize they have to create a public directory and will just get a very unfriendly "Cannot GET" error. This might be especially true as following the `npm install express` command, directories were generated automatically. This sets up an expectation that isn't fulfilled.
A little more handholding might keep you from answering as many questions and allow the beginner a really smooth entry.
The advice above regarding CTRL-C is good. An absolute beginner might not know this.
Also I noticed a leap in the "static file server" lesson. A beginner may not realize they have to create a public directory and will just get a very unfriendly "Cannot GET" error. This might be especially true as following the `npm install express` command, directories were generated automatically. This sets up an expectation that isn't fulfilled.
A little more handholding might keep you from answering as many questions and allow the beginner a really smooth entry.