The list of books as follows:
- Express.js Guide: The Comprehensive Book on Express.js
- Introduction to OAuth with Node.js: Twitter API OAuth 1.0, OAuth 2.0, OAuth Echo, Everyauth and OAuth 2.0 Server Examples
Buy them all at gum.co/sxvV.
You will get 16 files: 15 PDF, EPUB, MOBI files of the 5 books and 1 PDF file of the cheatsheet.