@daenney Don't expect to learn everything about React, RethinkDB and Golang in one course, no course can give you the knowledge you need, you should practice and then year by year you get the experience and all the benefits from that.

It's true that this course is released almost a year ago, but, the tools and the flow you should follow is the same, don't worry.

If you are a 'beginner' or with small experience (2-3 years) on web apps the answer is yes it will help you if you decide to take this course.

In the other hand if you already know how react js works and you have an experience with golang for web applications and websockets then you don't necessary need this course, you can just combine your knowledge to build a real time web application.

My recommendation: take any course you can find, compare the things you knew before the course and what you learnt after the course. Every course can you give you something, maybe you do things wrong and you think that you know how to do it but in reality you don't. It's good to learn from different programmers to see how the rest of us thinking and how the same problem can be solved by using different techniques, design and logic