is the story divided into different parts?
Yes, in 2 parts.
Naruto
He has said that the central theme in Part I of "Naruto" is how people accept each other, citing Naruto's development across the series as an example.

For Part II of the manga, Kishimoto tried to keep the panel layouts and the plot easy for the reader to follow, and avoid "overdo[ing] the typical manga style". 
when did naruto first air on cartoon network October 3, 2002 what is naruto? Manga series what does the above particular term series mean? They are comics or graphic novels originating from Japan. who is the creator of that manga series? Masashi Kishimoto what are the names of the characters appearing in that series? Naruto and Sasuke what is the genre of it? UNANSWERABLE in a short sentence, what is the storyline all about? UNANSWERABLE
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Naruto [SEP] Development
For Part II of the manga, Kishimoto tried to keep the panel layouts and the plot easy for the reader to follow, and avoid "overdo[ing] the typical manga style". He considers that his drawing style has changed from "the classic manga look to something a bit more realistic." Because of wishing to end the arc involving Sasuke Uchiha search for his brother, Itachi, in a single volume, Kishimoto decided that volume 43 should include more chapters than regular volumes. As a result, Kishimoto apologized to readers for this since volume 43 was more expensive than regular volumes.