http://www.readingrockets.org/audience/parents
Includes: Reading Tips for Parents, Children's Books and Authors, Hands-on fun and learning with themed fiction and nonfiction books, Exploring Science and Math, Summer Reading, Early Literacy, Connection With Your Child's School, The Common Core, Digital Media and Learning, and Helping Your Struggling Reader
http://www.getepic.com/
A free digital library ncludes thousands of books, audio books and learning activies.
For ages up to 13
http://www.archive.org/details/texts
A free digital library
Includes: Activities, Booklists, Articles, Brochures, and Multicultural literacy resources
https://www.literacyworldwide.org
Includes: Books for Kids and Brochures about how to support your little readers
https://www.lexile.com/
Helps you find books for your readers and allows you to search for lexile levels of books.
http://www.arbookfind.com/UserType.aspx
Allows you to search for books titles based on authors, topics, or titles of books.