To commemorate Reformation Day, some great resources are being offered up for free -- just for today!
One of my favorite short reads this past year, The Joy of Calvinism by Greg Forster, is available from Crossway books in pdf, epub, and mobi formats. If for no other reason, download and read the front matter of the book, in particular: Detour: Five Points about Calvinism.
In addition, Ligonier is offering free downloads of the MP3s and video files for R. C. Sproul’s 10-lesson series on Luther and the Reformation, along with a Study Guide (PDF). I've not yet read or listened to this series, so I'll be looking forward to it for sure!
Have a blessed Reformation Day!!