Alright, so this is no longer so much a question as to how to integrate it anymore. I now understand that you need to establish a connection to the MySQL database via php. I've located the database and sub-database I need to connect to. I know how to connect to that now (to a point, I haven't tried to actually do it yet considering most guides run off the premise that you're connecting to a local host). I narrowed my search down and was able to figure out how to do that, I just can't test it yet because I'm developing the front page before launching it to avoid using too much bandwidth.
My question now is more or less how to make the login field change to a profile display field once a user logs in. The standard response most tutorials give is "Once you're logged in, redirect them to a new page", which makes sense for some situations. So, is it possible to say:
"If user is logged in, then: launch HTML code showing display of profile" I know that PHP and HTML don't get along with each other in some circumstances, as in, you have to run PHP code before the HTML header. But, is it possible to insert HTML code in PHP? At this point, that's all I really need to know. That, and how to get the PHP to state that once a user is logged in, it should run the HTML code that designates a certain field to change from a login 'widget' to a profile 'widget'.
One last question here: In order to connect to the database, is it right that I'm referring to my domain name "www.mydomain.com" as the host? I've given that particular directory permission to access my database via myPHPadmin. From there, I just need to supply my MySQL database, sub-database, username, and access password.
My problem isn't understanding code, most if it is very straight forward, my problem is understanding the rules. I can read PHP/HTML/whateverwebdevelopmentcode, actually writing it is where I struggle.