So, it's been a little over 6 months and I'm finally on my last lesson of the guitar fundamentals courses. I don't have the lesson mastered yet, but I'm sure it will come with some more practice. Is there a recommendation on which core series to proceed with next (blues, country, rock)? I realize people are going to say do which one interests you most, but what I'm really asking is there one over the others that is more fundamentals based? I still see myself as very much a beginner and not necessarily what I would consider "intermediate" as the lesson title suggests.

Thanks!