If I downloaded Windows Binary version (.zip, node-v8.11.4-win-x64) from nodejs.org and unpack the ZIP, what the next should I do? I'm newbie in NodeJS and can't find the answer in the docs
I see the file node.exe inside of unpacked folder and as I know it's so-called "repl".
Where should I create the working folder for the projects and the file hello-world.js?
And in which Windows' terminal can I run the commands?
Windows 7 Home Premium 64-bit
You should put node.exe on your system PATH, that way you can use it from any directory. Here's a guide to edit path on Windows 7:
http://geekswithblogs.net/renso/archive/2009/10/21/how-to-set-the-windows-path-in-windows-7.aspx
You can then start it in any CMD shell or in PowerShell.
To test, start a new CMD window, and type
node -v
This should give you the node version.
I'd suggest you create something like a Projects directory for your code in your \user dir, with a subdirectory per project.
Once you've all this in place, just navigate to your project dir in your chosen shell and :
node hello-world.js
