Here is a list of links of official and semi-official bodies which offer a tremendous wealth of information about various aspects of Italian wines. There are 3 headings here: Regions, Grapes, and Books on Italy. Please scroll down for more... Work in progress!
REGIONS
Italy
Italian Vitis Database Working Group
North-West
Val d'Aosta
Piedmont
Barbera d'Asti e Vini del Montferrato
Strada del Vino dei Colli Tortonesi
Strada del Barolo e Grandi Vini di Langa
Liguria
Lombardia
North-East
Veneto
Trentino - Alto-Adige
Friuli-Venezia-Giulia
Central
Emilia-Romagna
Toscana
Umbria
Marche
Lazio
Abruzzo
Molise
South
Campania
Puglia
Basilicata
Calabria
Islands
Sicilia
Strada del Vino Cerasuolo di Vittoria
Sardegna
Strada del Vermentino di Gallura
GRAPES
BOOKS ON ITALY
Vinitaly International Academy Course Syllabus
The Finest Wines of Tuscany & Central Italy
Barolo to Valpollicela: The Wines Of Northern Italy
Brunello to Zibbibo: The Wines of Tuscany, Central & Southern Italy
Slow Wine 2016: A Year In The Life of Italy's Vineyards & Wines
The Hills of Chianti: The Story of a Tuscan Wine Making Family, in Seven Bottles