Here to make creating your CV not an eternal torment.
Install the Cormorant Garamond font on your machine. Also, set your texStudio to compile with XeLaTeX.
There are only 2 commands you'll need: \datedsubsection and \datedsubsectionnarrow. Their arguments are the same, they just differ in their spacing. The code that generated the first Education entry in the above screenshot is
\datedsubsection{\nth{8}-century BC -- present}
{%
School of the Gods, Greece}
{%
\textbf{Ph.D.}~in creating humanity}
{%
I am a \highlight{culture hero} ...}
The best way to get started is just to check out the main.tex file. I tried keeping the class file prometheus_cv.cls extremely simple so you don't get lost in new unknown commands. You should be able to easily create a professinoal looking CV with your basic LaTeX skills.