This is a 50-book set of the famous "Oxford Reading Tree" (ORT) home English learning materials, levels 1-6. This set is from the "Biff, Chip And Kipper" series. Level 1 teaches the basics of phonics and alphabet reading, gradually increasing in difficulty, with level 6 designed for reading stories. There are 8 books for each level, plus 2 guidebooks, for a total of 50 books. Photos 2, 3, and 4 show the books from level 1, which were used the most. Only the yellow books have some damage to the cover. The other books appear to have little damage. Level 6 was only read once. However, these are used items stored at home, so please understand that there may be some damage.