“I have not come to preach any new dogmas or religion, nor to establish a new order, nor be proclaimed a new Messiah or Pontiff. I have only brought before my people the light of the Vedic wisdom which had been hidden during the centuries of India’s thralldom.” — Maharishi Swami Dayanand Saraswati

Guru says, The Satyartha Prakash, or in English: The Light of Truth, written by Maharishi Swami Dayanand Saraswati is a mater piece for the people of Arya Smaj.

What can Guru say further, if this book is available online to read for free, you just go through it, and find out the advantageous teachings of Swami Ji. Here are two links, one for Html and one for Pdf. Guru is uncertain if links work in future, so better to save a Pdf copy for yourself (please make sure, if it is not protected in some or other ways). If your internet speed is down, you can look for html version.

Html book: link

Pdf book: link