Hi,

The real meaning of Sola Scriptura has been corrupted in the centuries since the Reformation. One of the best and most thorough examinations of Sola Scriptura I've ever seen is Keith matheson's book, The Shape of Sola Scriptura. It's a little tedious at points and somehat repetitious, but it very clearly defines the meaning of Sola Scriptura and offers excellent criticisms of the most common substitutes employed in it's place. Enjoy!

-Robin