Star Wars: Dawn of the Jedi 0

Star Wars: Dawn of the Jedi 0 is the preview issue of a comic book series written by John Ostrander. It was published on February 1, 2012.

Publisher's summary
It began with the mysterious pyramid ships--the Tho Yor--scattered to the eight corners of the galaxy, and ended with the establishment of an Order that would change the universe forever.

Here's your first look at the Star Wars of 25,000 years ago--before there were lightsabers, when the ties to the Force were new, and before the Jedi spread out into the galaxy.