Common Notation for Guitar Tablature Readers
This course is for experienced guitarists who are comfortable with guitar tablature and would like an introduction to common notation. This course should work well for you if you do not want to use a beginner guitar method to learn to read common notation because you find the exercises uninteresting or too easy for your skill level. Of course, it will still take plenty of time and practice to become fluent at reading the notation, but in the meantime, you can practice by reading pieces that interest you, rather than repetitive beginners' exercises.
Although described as a course, this could also be used as a textbook.