learn the guitar with a little help from high school geometry. Really simple. If the low E string is the X axis and  the fret is the Y axis...then if the root note i.e 1 is on the low E string....the successive notes on the other strings along the Y axis will read...1,4,b7,b3,5,1. Now when you want to find intervals and extensions all you have to do is extend this system with common sense. Its like having intervals on the Y axis and finding stuff thats closest to the fret.1.e. the 6th will be a whole step away from the B string and so on.Now try making your own chords. Of course the root can move from the top string and the system wraps around,but like I said being alert at geometry in school will pay off now...Just simple fretboard recognition tools. The stuff is right in front of you,use whatever logic you want to remember and reach intervals and notes you want.