This selection of books should be made a compulsory purchase for anyone with a child in nursery or reception. The next generation won't know Janet and John or Poppy and Sam, they will talk about Chip, Kipper, Biff and Floppy and these books complement the ones your child will be reading in school.
I cannot speak highly enough of this series. The stories are engaging, the pictures bright and informative (and with the added bonus of a hidden animal in every picture, similar to the yellow duck hidden on every page of the Usborne "Apple Tree Farm" books)and the difficulty increases at just the correct rate throughout the series. The early books introduce simple phonemes and reinforce them with repetition, but without becoming boring, while as you progress through the series, the stories become more complex without your child realising they are reading "real" stories. A classic case of Boiling the Frog!
Don't hesitate, click "add to basket" now. It will be one of the best purchases you make this year, especially at less than a pound a book! Absolute bargain.