I'm trying to figure out how to set something up that works as follows:

I give Alex, Bob, and Charlie unique logins and passwords.

They log in through the same screen, but each login/pw takes them to their own account page that I have set up for them and they can only view their own page. The pages consist of text, documents, and audio files that I have placed there for them to review. They do not need to respond to the material in any way, merely access it conveniently and securely.

I'm quite at a loss to figure out how to begin searching or figuring out what I need to make this work. I've found lots of ways to set up restricted access to content, but I'm not sure any of these systems allow for unique content based upon the login. Does anybody know of a program that will do this? Or can you at least give me an acronym or term for this that I can begin researching and reading on my own?

Help is greatly appreciated.

CoffeeCup Website Access Manager is the programme you need. The link can be found at the bottom of this page. Download the trial first and play with it. I'm sure you will find it suiting your needs.