Using YAML with HTML?

Hi all

I’d like to use YAML with a HTML site I am making, to allow a user to change information quickly.

I’d like to put the .yml files in a folder called _data. How do I link the .html file to the external data?

I’ve been looking at this article: http://assemble.io/docs/YAML-front-matter.html, however I am still unsure how to put the data given by the user into the HTML.

Thanks in advance!