Arizona's First Things First programs offer numerous means of financial and informational resources to groups and individuals across the state.
The Arizona Dept. of Educations website has page dedicated to early childhood education as well as pages for K-12 and beyond.
PBS and PBS Kids have information for children and adults alike. Along with games and interactive screens.
Zero To Three is a non-profit organization with a board of recognized professionals providing a plethora of information regarding the earliest years of beginning childhood.