If you create a regular account with a username/password on this site and then separately login via say Facebook, then you will end up with two separate accounts here. Things will work this way on most if not all sites featuring optional social login.
So how do you avoid that, and have the ability to log in to one account with either Facebook or your username and password?
Simply register a (free) account, confirm your account from the link in the email, and log in. Under your username on the top menu, click Edit user details. Then on that page, click on the Social accounts tab.
You can then link your social account with your SUS account by clicking the appropriate Connect with button and authorising us with the site you chose.
You can (entirely optionally) link one or more of your accounts at the available social sites (Facebook, Google, Linkedin, Twitter, Instagram, GitHub) to your account here.
Once that's done then you can log in to the one account here either with your email/password, or via any of your linked social networks
I'm not going to explain all the technicalities of what goes on under the covers, but what Is social login, how does it work, and what are the implications of using it?
Okay first of all, when you have a website like this where people can send information (e.g. sale entries) to the website, you have to decide, can people just send any old information or will people be required to create an account and sign in before they can send information to the site.
What is this social login mularky