I am coming to believe that #DataCamp's courses may be too simplistic. I'm still in my first one (hoping to finish it tonight), but if you're new to the topic, it may not have the information you need to gain a basic understanding. And it can be somewhat fast paced for such learners. If you're somewhat familiar already, their toy terminal for lesson exercises is aggravating because it expects only specific commands. In some cases, there's another command that can accomplish the same task ... and that is an error.

I'm not negating them. I still think they can be useful as part of a self-training program in which you use multiple sources to learn a particular skill.