I think this is a really cool beginner's guide. It does cover the basics... of European coats of arms.


I just thought it's important to point out that all countries/nations have slightly different rules, and there were a few strictly European things there...
though most of it is pretty standard...


Also, that a lot of those things are purely for "decorative" heraldry or more modern, and not things you would see, say, on battlefields in medieval times


But good for starting point!