1. Dragon Ball: This is the original manga and anime series, covering Goku's childhood and his journey to collect the Dragon Balls.
2. Dragon Ball Z: This sequel follows Goku as an adult and his battles against increasingly powerful villains, like Frieza, Cell, and Majin Buu.
3. Dragon Ball Super: This series continues the story after Dragon Ball Z, featuring new villains like Beerus, Frieza (again!), and Jiren.
It's important to note that within these main sagas, there are numerous smaller arcs. For example, Dragon Ball Z has the Saiyan Saga, Frieza Saga, Cell Saga, and Buu Saga.
So, while there are 3 main sagas, there are many more smaller arcs that make up the entirety of the Dragon Ball franchise.