Symbols in church art (Iconography - I think)

I walked the French way last year and the Portugese recently and have become more interested in the meaning behind the art, be it sculpture, paintings or glass. Can anyone recommend a good book or website that explains the meanings of the various symbols. Thanks in advance.

 

How to Read Churches is a book I bought agter a few Caminos. First saw it in Santiago and regreted not buying it.

https://www.amazon.com/dp/0847835987/?tag=camiforu-20

 

Scan either the paperback or ebook version available on Amazon of The Pilgrimage Road to Santiago: The Complete Cultural Handbook by David M. Gitlitz and Linda Kay Davidson. It is a useful introduction to art and architectural history along the camino.

Another basic scholarly source for religious/architectural iconography is
How to Read a Church,
Richard Taylor, 2003.

Happy research and Buen camino!

 

Thank you to both of you. I've ordered these and look forward to reading them