Originally Posted by Azarias

I would personally recommend that you read through the entire New Testament (including Revelation) as well as Genesis and Exodus in the Old Testament to understand all of the main stories, but eventually the entire Bible is key. Understandably, however, the prophetic and genealogical books are more difficult, but I find that their contents only strengthen your faith once you study them. Consistent Bible study will allow you to understand the "core" better!