The melody of 3 Am by Matchbox Twenty runs 322 notes across 38 bars, 2:46 long in Db at 120 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? 3 Am chords and lyrics.