Looking for step by step tutorial.....

Hi,
Looking for a step by step tutorial to make a simple log in registration administration system.

I'm not interested in a downloadable sql I can make my own database, but need to know how the database is set up to work best with the extensions and why.

The sql from the website is based on a web shop and I only need the login registration administrator part.

I did the Blue Sky tutorial, but this leads not to a simple system I'm looking for.
Of course including encrypting, User Level Authentication and Cookies treatment.

Hope it is somewhere!

Or please answer the first question: If I want a registration-page with:

First name:
Family name:
Email:
Password:

What is the best set up for the database when trying to accomplish this with WA extensions?! And keeping in mind that there will be administrator excess and users excess?