CCC 2225: Through the grace of the sacrament of marriage, parents receive the responsibility and privilege of evangelizing their children. Parents should initiate their children at an early age into the mysteries of the faith of which they are the "first heralds" for their children. They should associate them from their tenderest years with the life of the Church.
The Children's Rosary YouTube channel is an apostolate led by Doctor Blythe Kaufman.