The tutorial I worked on was the Hour of Code Minecraft tutorial. In less than an hour, maybe 20 minutes, I was able to complete this , showing it was most likely intended for someone of lower skill level of block programing. This tutorial was very interesting as it included parts of minecraft as well as the fact that it makes you think about what you are doing. Moving on to what you can learn, a beginner to coding can learn much from this such as if/else statements and loops, which is the basic foundation of JavaScript, while someone who is intermediate or an advanced coder will not learn much here, as it is really basic. A tool that I have used that is similar to this is Scratch. I  would recommend this to elementary students, as it is fun and there is much for them to learn here.