The English version is available for purchase on all Amazon stores (click the photo for the American version) plus a variety of other online book shops. The Norwegian book can be found in most Norwegian book stores, both physical and online.
New for 2014 is that the book will be published in five new languages: Dutch, German, French, Russian and Korean! The Dutch version, called "Kunst op je bord" is in fact already out, available here.
Book reviews for the international books
http://www.thesword.nl/boekrecensie-kunst-op-je-bord 4.5 out of 5 stars!