He doesn't want me to have to go figure out what Docker is, but now instead I have to figure out what Vagrant is or does, he doesn't say. I go to the Vagrant si

He doesn't want me to have to go figure out what Docker is, but now instead I have to figure out what Vagrant is or does, he doesn't say. I go to the Vagrant site and see: "Single workflow to build and manage virtual machine environments" If I was new enough to not know what Docker is, I am pretty sure I would be a little confused about that. I don't want a "workflow" do I, I thought I was trying to follow a tutorial. Do I need to "manage virtual machine environments?". Do I need to install both Virtual Box and this Vagrant tool? I think this is a nice idea and useful, but I wouldn't couch it in terms of being some great technique for beginner tutorials.