How do you get the collectors edition of a realm reborn?

Please be detailed as I am a noob :p

Sign into Mog Station, click "Additional Services", click Use Digital Upgrade Services, select "A Realm Reborn Digital Collector's Edition Upgrade", click Next, fill out appropriate info.

Edit: If you were hoping for the physical collector's edition stuff, you'll have to find a retailer selling it somewhere (may not be easy). It'll have a code and instructions on how to redeem for digital stuff.

Adding to the above, if you buy the physical version, it can only be used for a NEW account. It cannot be used to upgrade an existing account.