4 books · Ages 5–7 · Early Readers, Chapter Books
Stairway Decodables: Sounds of Phonics is a 4-book series for ages 5–7 by Leanna Koch. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Drew's New Fits and Tim's Trip are great first picks.
No particular order needed — browse and pick what catches your eye.