NO SPOILERS PLEASE In Dune by Frank Herbert, why is Paul going to Arrakis?

Please don't spoil anything about what happens in Arrakis, but just say what the reason for going there is. I'm in the part where Paul is about to go to Arrakis, but I'm confused as to WHY he must go there. :)

Me i’m in need of answerering this

Arrange the sentences below to form a logical paragraph. an experienced rock climber knows that it takes a combination of knowledge and preparation to perform a successful climb. a successful climb begins with a proper foothold, carefully placing each foot on a ledge or crack then reaching for a solid hold, and finally pushing off. in addition to a proper foothold, a climber must be careful to check the integrity of the rock before stepping because it has to be solid clear through. a veteran climber judges the integrity of the rock and chooses not to climb on conglomerates, packed clay with lots of little rocks. but, such knowledge of rock is not the only preparation a skilled climber needs; equally important is the correct equipment. with these tools, knowledge of rock composition and equipment safety, a climber may experience many safe and enjoyable climbs.

Read this sentence:somebody save the smoke! the nomadic tribes move to a new location each season. which word provides a clue to the meaning of nomadic? new season move location