Ravells,

This post sent me into several days of research after I realized I knew NOTHING about heraldry (well except that you could combine them with quartering. But I had just learned that relatively recently as well).

I found this slightly more in depth guide International Heraldry & Heralds and this book A COMPLETE GUIDE TO HERALDRY

And now I'm attempting to ensure that the coats of arms of the nobles in my world show proper familial and geographic relations. Which led me to finally get around to naming all 90 baronies of my country.