At the center of the course are the tune lessons themselves. Reels, jigs, hornpipes, airs, polkas, slides, and marches are taught phrase by phrase, with close attention to rhythm, phrasing, ornamentation, breath, and the musical details that give Irish playing its character. Many lessons include both a fully ornamented version of the tune as well as a simpler "bare bones" version, allowing newer players to enter the repertoire gradually while still learning the shape and flow of the music.

Alongside the tune lessons are separate technique libraries for Irish flute and tin whistle. Rather than reteaching the same techniques inside every lesson, the course organizes them into dedicated studies that students can return to as needed while learning tunes. Rolls, cuts, crans, slides, articulation, breath work, tone development, and other foundational techniques are taught individually and demonstrated in musical context.

The course reflects the way many traditional musicians actually learn over time: through tunes, listening, repetition, sessions, and recordings. Blayne's own teaching grew out of study with prominent players in the tradition, as well as formal study in Ireland at the University of Limerick, where he completed a master's degree in Irish flute performance.

Since its launch, thousands of students around the world have used the course as part of their learning — from complete beginners to long-time session players refining tone, phrasing, rhythm, ornamentation, and repertoire.

Each lesson includes looping controls, playback speed adjustment, downloadable notation and tablature, accompaniment tracks, and a comment thread on each tune lesson and technique library page, where students can ask Blayne or fellow players directly.

Much of the archive was built during an especially active five-year period of teaching and recording, eventually growing into a substantial body of work. Over time, the emphasis became less about constantly adding new tunes and more about helping students spend deeper time with the music already there: learning tunes well, revisiting technique, refining phrasing, and allowing repertoire to settle naturally over years of playing.