In an optimal setup, it's going to be a little more complex...
You'll want to add a table to the database that will store each users' preferences: what they've chosen to see on the page, the theme or color scheme they've chosen etc. At that point, when you hit the authenticated landing page, you pull those settings for the logged in user and write PHP code to parse the settings and display what you want.
It's not really a simple solution that can be provided. It's one you'll need to think out, design and implement.
