Here is a mega-pack of short texts by Nisargadatta Maharaj the Indian Guru, spiritual teacher and one of the most appraised 20th century’s exponents of the school of Advaita Vedanta philosophy (non-dualism). If you are new to Advaita you might like to familiarize yourself with the main works of Nisargadatta Maharaj. Take a look at I am That, I am Unborn or The Nisargadatta Gita – all to be found here on HolyBooks.com
The Quintessence of My Teaching Nisargadatta Maharaj
The Sense of I AM Nisargadatta Maharaj
The Final Talks of Sri Nisargadatta Maharaj