Section 2 of the Guitar Training Directory has now been published – the courses listed in this section focus on how to play specific musical styles (such as blues), specific guitar types (such as acoustic guitar), and particular guitar techniques (such as speed picking). You can see the full list here – http://www.netguitarist.com/guitar-training-directory-section-2-specific-styles-techniques/
The third and final section, covering guitar learning aids and other materials that don’t fit into the other categories, will be ready soon.