Welcome! For some good information about the kilt & tartan, I would recommend:

www.albanach.org

www.tartansauthority.com

The first site belongs to our own Matt Newsome, Curator of the Scottish Tartans Museum in North Carolina.

I know there is the kilt, the tarten, and sporrans, and a family crest (know mine).
When you say "family crest" I am assuming you mean the badge displaying the crest of the Chief of your clan in the buckle & strap? The crest is located at the top of a coat-of-arms, which belongs to the Chief alone -- the badge with the buckle, strap & crest signifies that you are a member of that clan.

My only advice: the mantra of many here at Xmarks: Know your tartan! It's history, especially. Which tartan are you wearing, and we can probably square you away with some.

Good luck on graduation, and I'm sure you'll make quite the impression! :mrgreen:

Yours Aye,

Todd