I need help with the Directory plugin

Hi, my name is Peggy and I am creating a wedding directory site and need help with getting started with the Directory plugin. I downloaded it today and I’m not sure how to make this work with my site. I have the home page already created and designed the way the person wants it, http://www.troianiwebdesign.com/wedding is the site.

All of the categories are already on the home page on the top, and both sides as links. This is the first time I am doing any kind of a directory site so I’m a little overwhelmed with this. They want to have a page that lists all of the companies that register for a certain category to show up on one page and then each company have their own page when clicked on.

Also can I add a link onto the home page for someone to register?

I would appreciate any help with this, I’m a little stressed right now!!