Complex sentence: In 2010, Oldman released "Oldman's Brave New World of Wine", published by W.W. Norton, which focuses on helping readers make the most of the unprecedented diversity of wines now available.
Split into simpler sentences: In 2010, Oldman released "Oldman's Brave New World of Wine", published by W.W. Norton. The book focuses on helping readers make the most of the unprecedented diversity of wines now available.