The Court of the Lord Lyon - The Official Heraldry Office for Scotland
The Heraldry Society of Scotland
The Scottish Tartan Authority
The Scottish Register of Tartans
Scots' Charitable Society
Books
So You're Going to Wear the Kilt by J. Charles Thompson
An excellent little book on the What, Why & How to wear Scottish Attire.
Required reading for those just starting out.
Unicorn Unlimited, Inc. One of the best sources of Scottish & Celtic Books http://www.scotpress.com/ Scottish Heraldry: An Invitation by M. D. Dennis
A wonderful Introduction to Scottish Heraldry
Scots Heraldry by Sir Thomas Innes of Learney
The Bible of Scottish Heraldry
An Ordinary of Scottish Arms by Sir James Balfour Paul
The Surnames of Scotland by George F. Black
Scottish Clan & Family Encyclopedia by George Way of Plean & Romily Squire
(Harper Collins 1994)
Scottish Clans and Their Associated Families: A Researchers Guide by Bob Heston
Magazines
Scotland https://www.scotlandmag.com/