There are some wonderful links below where you can hop online and read.
http://ngexplorer.cengage.com/ngyoungexplorer/index.html National Geographic read online very good for younger readers. Go to More Pages for different books.
http://www.professorgarfield.org/toon_book_reader/index.html
https://www.uniteforliteracy.com/
Great for juniors and ESOL
http://www.storylineonline.net/
http://www.childrensbooksforever.com/
http://www.fiction.us/children.htm Peter Rabbit stories
http://en.childrenslibrary.org/ International children’s digital library – lots of stories from different countries
www.curiousgeorge.com/kids-stories-books Curious George