As of now, there are a considerable number of volumes of the Overlord light novel. But the exact count might change over time as new ones are released.
The Overlord light novel has multiple volumes. The series has been ongoing and new volumes are added over time. To get the precise number, you might want to look at the publisher's website or search for the latest updates from reliable sources in the fan community.
In the light novels of 'Overlord', there are many interesting characters. Ainz Ooal Gown is the main character, a powerful undead magic caster. Albedo is a very loyal and somewhat possessive character towards Ainz. And Shalltear Bloodfallen is also quite notable, with her powerful combat abilities and unique personality.
Perhaps the story takes a different turn in terms of the main character's goals. In previous volumes, he might have been focused on one aspect of building his power, but in Vol 11, he could be branching out into new areas. So, the direction of the plot is different.
Yes, 'Overlord' is a light novel. It has an interesting premise where the protagonist gets trapped in a virtual world that he has to rule. It's been adapted into an anime as well.
The 'Overlord' light novels are a great series. They are set in a fantasy world where a powerful sorcerer gets trapped in a game world. Each novel in the series expands on the world - building, introducing new characters like the various floor guardians in the Great Tomb of Nazarick. The story is filled with strategic battles and political intrigue as the main character, Ainz Ooal Gown, tries to expand his territory in this new world.
Again, not having read it, it's hard to say precisely. But usually, the story in Overlord progresses by building on the previous events. If in the previous volumes Ainz was establishing his base, in Vol 17 he might be moving towards more outward expansion or dealing with the consequences of his earlier actions.