Start from the beginning of Stargate Command as they put together their first teams to explore the galaxy through the Stargate. Certainly, they needed to find advanced technology, but they also needed to form alliances with other races who could help them free the billions of slaves—of many species—who were at the mercy of the powerful Goa’uld System Lords.
HULU (US only) now has the first season of Stargate SG-1 so you can catch the story of how Colonel Jack O’Neill, Dr. Daniel Jackson, Captain Samantha Carter, and the Jaffa warrior Teal’c became the legendary SG-1 under the command of Major General George Hammond.