Thanks for writing it up! Diving into a large production-level C++ library is always going to be intimidating. I suppose projects like Node/io.js need as many contributors as they can get, so anything that lowers the barriers to entry for new contributors is a good thing.

With regards to the language mentioned below: the English is very good, albeit a bit terse. I think the main issue is that the article tries to cover a lot of ground in such a short time. My advice for @indutny is to narrow the focus a bit and pick a clear structure for the article, with an introduction and a conclusion.