Well The Hobbit is pretty much a prequel to LOTR in the same era and world, in Middle-earth. So pretty much all locations and characters are connected one way or another. The one Ring, introduced in the hobbit, acts as the major plot device in LOTR. The Hobbit tells the tale of how Bilbo came...
The Lord of the Rings: The Fellowship of the Ring The Hobbit: An Unexpected Journey The Hobbit: The Desolation of Smaug The Hobbit: The Battle of the Five Armies The Lord of the Rings: The Two Towers The Lord of the Rings: The Return of the King This order is designed to address one of...