This course uses Express 3. The latest release of Express is not backwards compatible with version 3. However, the course content remains applicable to current versions of Express and other server frameworks.
if you want to follow along with the course, be sure to install Express 3, or be aware that your code may need some changes to run properly. For more information about the changes to Express, see Migrating to Express 4.
In this course we'll walk through building a simple REST API with Node.js and Express. By focusing on nouns, verbs, and relationships, you'll complete this course with a clear understanding of what hypermedia is all about and how emerging hypermedia-driven API standards can make all of our lives as developers a little easier.