Definitely 'The Witcher: House of Glass'. It's a great start for those new to Witcher graphic novels as it showcases the main elements of the Witcher world.
I think 'The Last Wish' is quite popular. It's often the starting point for many people getting into the Witcher series. The short stories are easy to digest and give a great overview of the world and its rules.
In a way, they are suitable. The graphic novels usually have engaging illustrations that can draw in beginners. However, they might not explain every single detail about the Witcher world. But still, the basic plotlines are there, and you can get to know Geralt's character, his adventures, and the general atmosphere of the Witcher world without having prior knowledge of the franchise.
No. The Witcher books are primarily a series of novels written by Andrzej Sapkowski. They are in a traditional prose format, not graphic novels which are a different medium that combines text and illustrations in a more visual, sequential art style.
Yes. Given the popularity of The Witcher franchise overall, the graphic novels have also found a significant audience. They allow fans to explore the Witcher world in a new format. The art in the graphic novels can be stunning, and for those who might not be as into reading long prose novels, the graphic novels provide a more accessible entry point into the Witcher universe.
The written novels are generally better in terms of the depth of the story and the complexity of the characters. But the graphic novels have their own strengths. They can be a great introduction to the Witcher world for those who are more visually oriented. The art in the graphic novels can be really stunning and add a new dimension to the story. For example, the fight scenes can be more dynamic in the graphic novels.