Many people learn guitar by reading tablature and reaching a level where they can play along with learned chords and accompaniment rhythms.
But it is not easy to go further than this and start improvising or playing in depth based on theory.

This textbook is designed for those who want to build a solid foundation in guitar playing and focus on scales.
It systematically organizes various scales essential for playing the guitar, and presents basic theory and practice methods.
This will serve as a solid guide for readers who are curious about other scales to refer to whenever necessary.
We aim to help you improve your understanding of scales by mastering them perfectly through various practice methods, and to move on to more creative and free playing.

I hope this textbook will help you move beyond simple playing frameworks and into a deeper exploration of guitar scales.
- From the preface -