The melody of I Found A Boy by Adele runs 408 notes across 98 bars, 3:31 long in A at 87 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? I Found A Boy chords and lyrics.