Guitar Theory Lessons for Beginners
This page is for advanced beginners: players who can change between open chords, strum a few songs and want to start understanding what they're playing. If you're still learning your first chords or how to hold the guitar, start there instead. Guitarion covers theory rather than first-chord basics, and you'll get more from these guides once your hands know the instrument.
Theory is easiest to learn early, before habits set in. The steps below are deliberately few. They cover the three things that make everything later simpler: knowing where the notes are on the two lowest strings, recognising the handful of intervals that build most music, and seeing the three-note shape inside a chord.
Each step links to a guide written for intermediate players, so don't try to finish every guide in one go. Take the part each step points to, practise it for a week or two, and move on. When the three steps feel comfortable, the intermediate path picks up where this one ends.
By the end you'll be able to name any note on the low E and A strings, recognise a major and a minor third by shape, and play a major or minor chord as a three-note triad.
Start here
How to Learn the Guitar Fretboard NotesHow to learn the guitar fretboard notes without rote memorisation: two anchor strings, octave shapes for the rest, and an eight-week plan that makes it stick.Read the guide →Learning path
- Notes on the first two strings
Learn the natural notes on the low E and A strings, saying each name aloud as you play it.
- The first five intervals
Learn the minor third, major third, perfect fourth, perfect fifth and octave as fret distances on one string.
- Root-position triads
Play major and minor chords as three-note shapes with the root as the lowest note.
- Make it a daily habit
Use a short daily routine, even twenty minutes, so each step builds on the last.
- When you're ready: the intermediate path
Carry on with octave shapes, CAGED, the pentatonic scale and ear training.
All guides in this topic
4 NOV 2025
How to Learn the Guitar Fretboard NotesHow to learn the guitar fretboard notes without rote memorisation: two anchor strings, octave shapes for the rest, and an eight-week plan that makes it stick.
24 SEPT 2026
Guitar Chord Progressions: Keys and Common PatternsMost songs share a handful of chord progressions. Learn the seven chords in a key and the Roman numerals that describe them, and you can play, transpose and write them.
Questions about this topic
Do I need to learn theory as a beginner?
You can play plenty without it, but a little theory early saves time later. Knowing a few note names and what makes a chord major or minor makes new chords and songs quicker to learn, because you're recognising patterns rather than memorising each one.
What should I be able to play before starting these guides?
The common open chords — C, A, G, E, D, Am, Em and Dm — and changing between them in time. You don't need barre chords or any music reading. If those chords are still a struggle, spend a few more weeks on them first.