This is spot on, and can apply to anyone branching out into a new area. I will add this concrete piece of advice that can simplify things:

Don't ask the user to install tools or use ones that are not core to the topic. I still have a bad taste in my mouth from the 2 Scoops of Django tutorial after getting stuck installing VirtualBox, Chef, and Vagrant. The solution was to just not use them, because they don't have anything to do with Python, Django, or making a web server.