I recommend these books for children aged 6-9. They are great at encouraging children to read. I initially bought the story tapes for my reluctant reader son. Both my children (boy 8, girl 7) loved the stories so much that soon they were both devouring the books. They are aimed at a younger audience than (beloved but less accessible) Just William. The typeface is large and easy to read, the stories short and fast paced, but most importantly, they are really funny and Horrid Henry appeals to the rebel in all of us.