Luther, Martin
"Luther's Little Instruction Book: The Small Catechism of Martin Luther" by Martin Luther is a catechism published in 1529 for teaching children. This concise guide breaks down Christianity's essential teachings into accessible lessons covering the Ten Commandments, Apostles' Creed, Lord's Prayer, and sacraments. Luther created it to address widespread religious ignorance among ordinary Christians and even pastors. Despite being only twenty pages long, this foundational text remains central to Lutheran education and confirmation today. (This is an automatically generated summary.)
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.