Start with high-confidence wine books, then narrow by subgenre or adjacent topics.
The Emperor of Wine
Elin McCoy
The Billionaire's Vinegar
Benjamin Wallace
Adventures on the Wine Route
Kermit Lynch
Napa
James Conaway
Judgment of Paris
George M. Taber
Blood From a Stone
Adam S. McHugh
Vines in a Cold Climate
Henry Jeffreys