He attended the creative writing program at the University of Gothenburg, an institution which has fostered some of the country's better-known writers, and has since become an established force in new forms of poetic expression there. En annorlunda praktik (A Different Practice) was his first book, published by Norstedts Förlag in 1998. Subsequent books Blomsterur – Förklaringar och Dikter (Clockwork of Flowers: Explanations and Poems), and Åren (The Years), were published in 2000 and 2002, respectively. In 2003, Nyberg wrote the play Tunnelsång (Tunnel Song), commissioned by Gothenburg's Cinnnober Theater with the mission to stimulate and develop contemporary Swedish theatre. Nyberg serves on the editorial board of the Swedish literary publication OEI.