This is not an exhaustive list of resources, as I gather repertoire from a variety of sources. These are some commonly used books in lessons.
For the Young Beginner, ages 4-6:
Tales of a Musical Journey
My First Piano Adventure:
For young beginners ages 5-9:
First Scale Book for Young Pianists:
For the Adult Beginner:
For the intermediate student:
Masterworks Classics Series
Applause! Series
Czerny: Practical Method Op. 599
Burgmüller: 25 Progressive Studies, Op. 100
Theory