We had a few favorites, Golden books were big with my dd5 when she was learning to read. I had kept all my dd25 Golden books from when she was a child and so I had as least 100 books at different reading levels from Disney type to The Pokey little puppy. Both dd5 & dd7 first read from Storybook Treasury of Dick and Jane and Friends. It's a hardcover book of about 200 pages of many stories I thought it was a perfect first reading book, they didn't spend much time with it but because it was simple but they learn how to read with flow right from the begining if that makes since. I don't remember the name of the series but my dd5 also liked Good dog, Rover and Silly Pig, it introduced 50, 100, 200 words depending on reading level. Dr. Seuss and PD Eastman were big favorites too!