The Westminster Larger Catechism was intended "to be a directory for catechising such as have made some proficiency in the knowledge of the grounds of religion with the proofs from the scripture". A step up in terms of depth and breadth as regards theology, but also contains very helpful pastoral advice.
A catechism is an old teaching tool, using a question and answer format, to instill into the mind and heart, the truths of God and the Gospel. This Westminster Shorter Catechism was produced by the Westminster Divines (Theologians) during the Westminster Assembly (1643-1653). It consists of 107 questions, carefully posed and just as carefully and exactly answered, with Scripture proofs to undergird the doctrines taught. It was originally intended for children and the unlearned, but has proved itself to be valuable to a wider audience.
under development, check back later.
The Regulative Principle of Worship deals with how Scripture teaches us to worship God, without adding or taking away from His Word.