Fourths tuning is uncommon for guitar but its use is increasing. Artists such as Stanley Jordan, Alex Hutchings, Tom Quayle, Justin Perdue and Ant Law have successfully used this tuning in a range of genres.
The notes generally used in fourths tuning are E-A-D-G-C-F.
My initial posts will cover chords, progressions and scales. Later posts will include transcriptions to show how this tuning can be used for classical, rock, pop, folk, jazz etc.
I hope that you find this material useful.
'Guitar tuning in 4ths' Facebook group.
Tom's Music Lessons - Series on youtube
Sixty guitar chords for all fourths tuning
Zhille's Guitar Blog
Stanley Jordan on P4 tuning
Alex Hutchings interview on his use of fourths tuning
Tom Quayle explanation of fourths tuning
Justin Perdue notes on fourths tuning