Watch Droids (1985) and Ewoks (1985) after Episode VI: Return of the Jedi as they feature characters introduced in the last film of the original trilogy. These TV shows are animated and are best to watch with small children.
Watch Rebels (2014) after "Episode IV: A New Hope" to learn more about the conflict between the Rebellion and the Empire and see what happened to some of the characters from the prequel trilogy.
Clone Wars (2003) is a 2D animated series that follows both Jedi and the Clone armies in their battle against the Confederacy, and is known for introducing General Grievous, a four-armed cyborg, and Asajj Ventress, who serves as the main antagonist during the series. Watch this after Episode II: Attack of the Clones.
The Clone Wars (2008) is a 3D rendered series that closely follows Anakin Skywalker and his teenage padawan Ahsoka Tano, as well as other Jedi and clones. Watch this after the original Clone Wars TV show and after Episode II: Attack of the Clones and the Clone Wars animated film, which serves as an introduction to the show.
https://www.wikihow.com/Watch-Star-Wars#Watching-the-Star-Wars-TV-Shows_sub
