Watching the movie adaptations of Tolkien's books can also be a great way. The filmmakers have done a good job of bringing Gandalf's stories to life on the screen. You can see his actions, his magic, and his interactions with other characters more vividly, which can help you understand his stories better.
I'm not sure which specific story Gandalf is telling as there are many in the Tolkien's works. Maybe it's about the history of Middle - earth, like the battles against the dark forces or the tales of the rings.
Hermione would be extremely worried. She'd start researching right away, trying to find out all she could about the One Ring. She might try to find spells to contain or protect against its power. As for Voldemort, he would see the One Ring as a tool to gain more power. He would likely be overconfident in his ability to control it, not realizing that the ring could potentially control him instead.
It's hard to say. Gandalf has a lot of raw power and experience. He's faced some really tough foes in Middle - earth. But Harry Potter is no slouch either. He's got his own set of powerful spells and the ability to think on his feet. However, I think Gandalf might have the edge. His magic is more of an all - encompassing force, and he's had centuries to master it.
Another concept is that Naruto is sent to Middle - earth. There, he could use his ninja skills and chakra powers. He and Gandalf could team up to fight Sauron. Naruto's ability to make friends and inspire others would be really useful in uniting the different races of Middle - earth against the common enemy.
Well, Gandalf is from the Ainur. He was among those Maiar who were sent to Middle - earth. His purpose was mainly to help the good against the forces of evil like Sauron. He was created long before the events in Middle - earth started to unfold. Gandalf's origin story is deeply intertwined with the greater cosmology of Tolkien's world. He had powers that were both magical and related to his wisdom and knowledge, which he used to influence the course of events in Middle - earth.
Gandalf originated from a higher spiritual plane. He was dispatched to Middle-earth with a purpose. His background involves being part of a divine order and having a responsibility to bring hope and resistance against evil.
Well, in such a fanfiction, Naruto might be really confused at first. The One Ring has its own dark power and lore from Middle - earth, while Naruto is from the ninja world. Maybe Naruto would think it's some kind of super - powerful ninja tool at first. He might try to use his chakra on it, not realizing the corrupting influence it could have. And his friends like Sasuke and Sakura would be very suspicious of this strange new item Naruto has found.