I highly recommend Bishop Wuerl's masterful explanation of the Faith. His brief chapters, arranged to parallel and explain the Catechism of the Catholic Church, read like four-page essays on the deposit of faith entrusted to the Church.
Readers are invited to "dig deeper" into the official Catechism should they desire more detailed explanations.
Bishop Wuerl's prose is clear and elegant. It's no wonder he's called "the teaching bishop." The Catholic Way is a great resource for catechists and participants in parish RCIA programs.