Tim Challies has kind of an online “book club” of sorts over at his blog. He picks a classic Christian book and each week he and his readers read a portion. Then he posts his thoughts on the blog and opens the comments sections for reader interaction.
He’s getting ready to start C. S. Lewis’ classic Mere Christianity. If you’ve never read this book, you must.
Here are links to three of the places you may shop (and in each case feel free to hunt around the sites as they probably have it in multiple versions):