About Fretwise

Who this is for

• The total beginner who's never read theory and isn't sure where to start. Work through the chapters in order.
• The self-taught player stuck looping the same minor-pentatonic box. The intervals and modes chapters are written for you.
• The returning player who once knew theory and wants a fast, structured refresher. Use the sidebar to jump to what you've forgotten.
• The songwriter who can hum a melody but can't get it into chord changes. Chapters 8–13 are the answer.

How it's structured

Fretwise is organised like a textbook, not a playlist. There are fifteen chapters, each with several short lessons. Every lesson is one idea — small enough to read on a phone, deep enough to actually teach something.

• Chapters 1–4 are the foundation: notes, fretboard, intervals, rhythm. Don't skip these even if you've been playing for years.
• Chapters 5–7 are scales and modes: the vocabulary of melody.
• Chapters 8–10 are harmony: how chords are built and how they move.
• Chapters 11–13 are composition: melody writing, improvisation, songwriting.
• Chapters 14–15 are practical: a practice roadmap and the full reference library.

How to use the site

• Use the sidebar on the left to navigate chapters and lessons. On mobile, tap the menu icon.
• Hit / on your keyboard to focus the search from anywhere. Search runs entirely in your browser — no servers, no tracking.
• Tap any fretboard diagram. The buttons let you cycle scale degrees and toggle labels. The patterns transpose if you change the diagram's root.
• Use the theme toggle in the header to switch dark/light. Your preference is saved locally.

The philosophy

Most guitar resources teach shapes. You memorise a pentatonic box, then five more boxes, then chord charts, then a list of "modes" that all look like the same shape moved sideways. Three years later you still don't know why any of it sounds the way it does.

Fretwise teaches relationships. The minor pentatonic isn't a shape — it's a 1, ♭3, 4, 5, ♭7. Once you know that, the shape draws itself anywhere on the neck, and you can mix it with the major scale, drop in a blue note, or skip a degree to make a phrase. The shape is the output, not the input.

What's not here

• Standard notation reading. Tabs and diagrams are enough for what we cover. If you want to read music, get a notation-specific book — it deserves its own course.
• Genre-specific shred technique. This is theory, not technique. Find a teacher for picking, tapping, sweep.
• Tone, gear, recording. Different rabbit hole. Important — but not the rabbit hole we're in.

Credits & thanks

Fretwise is open-source and free to read forever. If a lesson confused you or you found an error, open an issue on the project repo — every piece of feedback makes the next reader's path clearer.

Start with Chapter 1 →