To sign in to your Buyer Account you must first be approved. Once you have received your approval email you can follow the link from there or visit the Anam Craft homepage and click the "Sign in" link at the top of the page.
Upon first sign-in, you will need to complete your profile by adding your store information, shipping address, reseller ID, etc. You can also change your password in your profile dashboard, as well as view order history, invoices, and access your message center.