Well, Naruto getting Obito's Sharingan would change the whole dynamic of the Naruto universe. His friends might be a bit wary at first, as the Sharingan has been associated with the Uchiha and their often complex and sometimes dark history. But Naruto being Naruto, he would probably use it for good. He could combine his own chakra control and the power of the Sharingan to create new and unexpected combat strategies. For example, he could use his shadow clones in more creative ways, with the Sharingan's enhanced perception.
Naruto would adapt to Obito's Sharingan by relying on his strong will and his existing combat experience. He's faced many challenges before, and this would be just another one. He'd probably train with Kakashi or Sasuke to understand the Sharingan better. Since he has such a large amount of chakra, he might be able to use the Sharingan's power more frequently than others. He would also try to incorporate it into his existing fighting style, for example, using it to enhance his Rasengan or his taijutsu.
I really like 'Obito's New Path'. In this fanfiction, Obito gets a second chance in a different reality. His Sharingan abilities are explored in unique ways, like how he uses it to understand the true nature of the ninja world. The story also has great character development for Obito and other Naruto characters.
One potential implication is that Naruto's fighting style would change drastically. He would have to learn how to use the Sharingan's abilities like predicting movements and copying jutsus. This could make him an even more formidable opponent.
In some fanfictions, it could be through a special jutsu or ritual. Maybe Itachi, before his death, transferred his Sharingan to Naruto in a unique way, perhaps using a forbidden technique that was known only to a few in the Uchiha clan.
In some fan theories, it could be due to a unique chakra interaction. Maybe the Kyuubi's powerful chakra somehow mutates Naruto's own ocular abilities and triggers the emergence of the Sharingan. But this is just a wild fanfiction idea.
In some fanfictions, it could be due to a special jutsu gone wrong. Maybe a jutsu that Kakashi was using to transfer some of his chakra to Naruto for a mission accidentally transferred his Sharingan power as well.
In a fanfiction, it could be possible through some sort of transplant. Maybe Obito, in a unique situation, decides to give his Sharingan to Naruto. It could be due to a strong bond they form during a particular adventure, where Obito sees Naruto as the key to saving the ninja world and believes his Sharingan will enhance Naruto's abilities.
In fanfiction, if Naruto got the Sharingan from Madara, it would completely change his power dynamic. He would gain the abilities of the Sharingan like enhanced perception, the ability to copy jutsu more easily, and perhaps even access to some of Madara's unique Sharingan - based techniques. This would make him an even more formidable opponent and could potentially change the entire plot of the Naruto universe within the fanfiction world.