Some kind soul has created a web site for free Catholic devotionals and spiritual reading, available for download in PDF format. When you take a look, just keep scrolling down the page — there are LOTS of books, including some of the Fathers of the Church.
Books= good! Free=Good!! Catholic=GOOD! Free Catholic Books = what more could you ask? In the Year of Faith, plan to do some reading that will help you grow to an even deeper appreciation of your Catholic faith. These free books will help you do that.
By the way, you will also find free holy images (scanned prayer cards) that you can download in zipped folders.