Medieval Italy
Glossary of Renaissance Dress and Textile Terms · Vaneglista di Antonio Dellaluna did a huge public service by transcribing the glossary from Dress in Renaissance Italy, 1400-1500, by Jacqueline Herald. (Humanities Press: NJ, 1981). The book is, sadly, out of print.
Paradox Place · Adrian Fletcher's web site is a must-go destination for the armchair medieval traveler to Italy and other places. Lots of big, beautiful photos that he took himself, with his own knowledgeable eye-witness descriptions. Pics so beautiful, they'll make your eyes water.
A Day in a Medieval City, by Chiara Frugoni · Two things I love about this book: It's about Italy, rather than England, like most medieval stuff in these parts, and it's a fun read. Wonderful details amply illustrated.
Medieval and Renaissance picks
Golden Tarot DeckA Renaissance Tarot: A Guide to the Renaissance Tarot
Crispin: Cross of Lead,
by Avi · Crispin is a series of very engaging kid/YA novels that make the medieval times seem real, without the usual hyperbole.
Catalogue of Digitized Medieval Manuscripts · As close as most of us will get to looking at the precious manuscripts themselves.