Swami Vivekananda left a great deal of literature for us to explore. His works have been divided into nine volumes and are available via Wikisource. Here are links to the full-text versions of his works:
- The Complete Works of Swami Vivekananda
- Complete Works of Swami Vivekananda - Kindle edition by Swami Vivekananda, Sister Nivedita, Swami Vivekananda. Religion & Spirituality Kindle eBooks @ Amazon.com [All proceeds are donated to Advaita Ashrama]
Swami Vivekananda Quotes initially provided full-text content of Volume 1 of the Complete Works. However, in an effort to reduce online duplication, these posts were removed. But, of course, you can find everything in the links provided above.