Download the app from the USAs largest early childhood training institute, Appelbaum Training Institute. Established in 1989, ATI has a track record of providing awesome child care training seminars at affordable prices. The Appelbaums have written and published more child care related books than anyone in early childhood. Download the app to read our daily "Message;" take our self-study courses; register for a seminar; interact with us on social media; browse our online store for unique items; and more!