I had the weird experience that fundamentals classes seemed to assume that I had much, much more experience than I actually had as a beginner. Is there some distinction between different "fundamentals" classes that people should be looking for?
Depending on where you are, you may do well to find a tiny studio with good reviews on yelp or, if you're near a school, look for tutors.
In the mean time, definitely keep doodling but occasionally try to doodle something you can see. Then laugh at it and shade a sphere or a cone. :)
This is one area where everyone has potential. You just need to develop it with some basic tools, most of which involve ways of seeing.