As I perceive and understand it, GT Fundamentals has been structured to develop the basic skills foundation, like Arithmetic in elementary school is to higher school Algebra, Calculus, Trigonometry & Mechanics. Once a comprehension of the basics has been accomplished, you are set to explore and learn any of those different paths in pretty much any developmental order, each of which have their own further Mathematical conventions and practical purpose in application.[br][br]'Muscial Math' is the similar. The more genre specific structured Blues, Country, Rock or Acoustic Level 1 & 2 courses here on Guitar Tricks can be approached in any preferred order.

So my advice would be to branch out next in whichever of the musical genre direction/s interest and appeal to you most, which you are equipped for instrument wise, and which will contain and develop useful skills in the musical genre you ultimately intend to pursue most passionately.

The order doesn't matter for the four courses here.

e.g. For me, that has been (Classic) Rock. I'm also interested in popularised Bensonesque style smooth Jazz, which I understand is the most challenging of all popular genres and so will eventually lead me to get around to the Blues as its foundation. For now I'm totally focussed upon developing my Rock skills, with demonstrable time/performance objectives.

All the best.