The aim of this repo is to give you an idea of how the above topics work. If you git clone the repo you'll be able to fiddle with the code involved and try some for yourself. Open index.html to start with...
I try to give the full picture as much as I can and have various asides in blue which are additional information and not central to what we're doing but are still useful.
To do the pre-compilation of templates you could do npm i to get the Handlebars compiler and CLI. I reckon it's better for you to do npm i -g handlebars, however, so you can use handlebars anywhere in your projects, rather than just in this one.