@csphilli As already mentioned, there are innumerable resources (mostly free) online that will help you learn enough HTML and CSS to build a basic webpage. After you have a grasp of the fundamentals, as already mentioned, you'll see why Hugo is an amazing piece of software.
If you are 100% brand new, I like the series of fundamental lessons Google has been putting out over the last few years:
Now, if you want to just dive in head first, I would recommend going through the docs and trying to install a theme and run the local server. If nothing else, you can start creating content with a very basic theme and get familiar markdown syntax. If you haven't written in markdown, this online tutorial on GFM will take you less than half a lunch break: http://www.markdowntutorial.com/s
P.S. Although it can be daunting, learn version control (i.e., git) sooner rather than later. You'll never be sorry you spent the time learning how to completely revert your own mistakes...because you'll be making them...often