Hello,
A forum member recommended the book
Intervallic Fretboard, earlier. Thanks for that! I'm actually the co-author of that book. Please note that it is for intermediate and advanced players and deals with an intervallic approach to the fretboard. It takes some patience for the concepts to get a foothold.
As far as technique, I wrote another book titled
Guitar Fingers: Essential Technique in Pictures. It takes a detailed look at technique, with hundreds of short exercises and pictures. Perhaps that might be helpful in your resolve to going back to basics. There are excerpts at
http://www.pelemeleworks.com. Feel free to contact me there if you have any questions about the book.
Cheers.