A Life Worth Living is an introduction to the Christian Faith. It is primarily for those who have no faith background.

No Place Like Home is an introduction to the Christian Faith. It is primarily for those who have some faith background; and only secondarily for those who have none.

St. Anger is an introduction to the Christian Faith. It is for those who have some faith background, as well as for those who have none.

A rationale for the three introductions to the Christian Faith (A Life Worth Living, No Place Like Home, and St. Anger) can be found here.

Saved. So What? is written for practicing Christians.