I am reading "The Year of Living Biblically" by AJ Jacobs.
It's hilarious and a very user-friendly way to learn about the Bible, it's contents and the religions that adhere to it.
AJ writes for Esquire magazine and for one year he tries to follow the Bible as literally as possible (without breaking any laws).
He is successful (or unsuccessful) to varying degrees, but in the course of his quest he exposes many myths (and truths) about the Bible and religion, and writes about it in a very entertaining way.
I would recommend this book for anyone who desires to learn about the Bible (to be literate about its content and the people who follow it) in a secular way, painlessly and without the dogma and preaching that, say, a Bible Study would manifest.