Volume 1 is the first season of "RWBY". It premiered on July 18th, 2013 on the Rooster Teeth website. It was preceded by the "color" trailers. It was followed by Volume 2.
There are sixteen episodes in the volume. However, the episodes vary greatly in length, with episodes 1, 8, 15 and 16 being around eleven minutes long, with all the other episodes running approximately six minutes. Volume 1 ran from July 18th to November 7th, 2013.
The DVDs and Blu-rays of the first volume were released on November 12th, 2013, which included a "Complete" movie version of the volume. The Complete version was later posted to the Rooster Teeth website on September 29th, 2019 and to YouTube on September 30th, 2019..
The volume is dedicated to the main characters starting their school year at Beacon Academy with the Beacon Academy Initiation and later with attending classes. The end of the volume is dedicated to expanding the world and the larger story.
Volume 1 was originally just going to be a 4 episode mini-series about team RWBY forming in the emerald forest, but the positive reception of the 4 character trailers extended it to the volume we all know today.