Is there a place to sit in the store?

Yes cafe or downstairs are chairs

Yes there is

Yes there's a cafe, and chairs in basement.

Yeah the floor... best spot in the entire store 👍👍

Yes

Starbucks area and near the Eastern philosophy section there are 3 or four brown chairs. However, you can sit on the floor near the book shelves as long as you're reading a book and you would not be incorrect or scolded by staff for doing so no matter the barnes and nobles location

Down stairs in the fiction section or the cafe.

I Agree with MR.Rosen