For anyone looking to become Catholic, I have a couple of documents to share. First, there is a really nice Catechism study guide. Second, I created an accompanying worksheet-format document, where you can conveniently fill in your answers to the questions for posterity.
Of course, you'll also want to order a copy of the Catechism along with a Catholic Bible. Regarding the latter, I prefer the classical non-PC translation, fonts, and ancient pictures from the illustrated "New Revised Standard Edition"-- whereas wifey is loving her plain English, color-coded "Great Adventure Catholic Bible". Ideally, it's best to own multiple Bibles, so you can cross reference translations to get a clearer picture.