Logging into your new Shopify account is easy. If your email was used on any other stores you may have, then you can switch between them easily using your single login.
Logging Into The Shopify Admin
Step 1: Find the Shopify admin URL. It will have .myshopify.com at the end of it. e.g. https://ashley-furniture-florida.myshopify.com
Step 2: Enter your email address and click continue. - This is the email that you used when accepting the Shopify invite originally.

Step 3: Enter the Password. - This is the password you used when you accepted the Shopify Invite originally.

Step 4: Click log in!
If you forget the password to your Shopify account, then follow the instructions above, but instead of entering your email and password, click "Forgot password?" and follow the steps to reset your password.
Pelican Commerce does not assign your password, you will need to retain and save your login. You're responsible for retaining and managing this information.