For example if I search for the "Smith coat of arms"
https://www.google.co.uk/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=smith%20coat%20of%20arms
Hi, it would probably be worth x-posting to /r/heraldry (or maybe even /r/genealogy?), but while you're here, you might be interested in a couple of recent threads on coats of arms
Did noble families in the middle ages have a family sigil and/or motto like in Game of Thrones?
Irish family crests/coats of arms