What exactly are you wondering about???? There's the Force Wars, and the Je'Daii become the Jedi. All darksiders are defeated. Rajivari is apparently somehow involved. A few centuries later, around 25 thousand years before the movies, Xendor leads the First Schism of the Jedi. Him and his darksiders are defeated. About 7 thousand years before the movies, some of the Jedi begin experimenting with shaping lifeforms and trying to gain eternal life, to shape the galaxy into a paradise. They tap into their passions, the dark side, to expedite the process. They go to war with the traditional Jedi. This is the Second Jedi Schism, which lasts for decades, called the Hundred Year Darkness. The Dark Jedi are defeated, and the survivors, including Karness Muur and Xoxaan and Ajunta Pall, are exiled. They come to Korriban and Ziost, enslave the native Sith Species, and become the Dark Lords of the Sith. About 5000 years before the movies, the Sith Empire is discovered. Naga Sadow goes to war, who just became leader after Marka Ragnos dies. They are defeated, but two groups secretly survive... one group crash lands on Kesh, and become the Lost Tribe. The other is led by Vitiate, and becomes the new Sith Empire. About 4500 years before the movies, an exiled Naga Sadow trains and is destroyed by Freedom Nadd, and he eventually dies but remains as a Sith Spirit. About 4000 years before the movies, the spirits of Freedon Nadd and Marka Ragnos train Exar Kun and Ulic Qel-Droma as the new Dark Lords. They fail. Shortly after Exar Kun's defeat, Revan and Malak encounter Vitiate and turn to the dark side. They're defeated. Traya, Sion, and Nihilus then come to power and are also defeated. About 3700 years before the movies, Vitiate returns and takes over half the galaxy, but is eventually defeated. About 2000 years before the movies, a Jedi turns to the dark side and united the surviving Sith fragments, becoming Darth Ruin. That is the Fourth Schism of the Jedi (the Third Schism happened sometime earlier but was a total bust). Ruin dies, but his Sith remain at war with the Republic for 1000 years. They include Daiman, Odion, and others. They basically succeed in taking over the galaxy, but they start fighting each other, and allow the Jedi and Republic to eventually get on equal footing again. About 1000 years before the movies, Lord Kaan reunited the remnants of Darth Ruin's Sith. But they are eventually all wiped out... except one... Darth Bane, who starts the Rule of Two with Zannah, eventually leading to Darth Tenebrous, Darth Plagueis, and finally Darth Sidious.