English speakers will despair in Düsseldorf's main library, as there are only about 3 shelves with English-language books (for English books, I recommend the International Library Düsseldorf).
But if you're looking for a German book, you will probably find what you need as the library has a big selection of fiction and non-fiction books. It also has audio books, music CDs and a selection of DVDs that can be rented. Sitting spaces are available, but usually hidden behind bookshelves.
The directions and floor numberings are a bit confusing. I got lost trying to find what I was looking for when I was there the first time.
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