Rudolf Steiner
There are also journals and articles to be found there. Some you can also download.
http://www.waldorflibrary.org/index.php
There is also a wonderful website on which you can download books to listen to. I really like that website as well, as sometimes for long walks with the dog, or a long road trip it can be great to simply listen to a book which has been read to me. The person reading the books has a very nice voice.
http://www.rudolfsteineraudio.com
Enjoy all the reading and listening that you can do :-)