Atharva Veda is the fourth and last of the Vedas. It is also known as Brahma Veda. The contents of Atharvaveda are very important especially those associated with healing.
Atharva Veda in Hindi is provided by Ved Puran website. You can read it online in Hindi but there is no download option.
You can read Atharva Veda online here at Ved Puran.