Success and improvements in web traffic

I have created a website this week, and I have decided with the help of a mentor to focus on only one of my four businesses.  This new focus is reflected on my website--already editing.  The counter has surprised me, as it went into double digits quite quickly.

 Improvements need to be made in how I gather contact info.  I have a guestbook, which has not been successful yet.  People are afraid to leave their info or something.  So how do I do a page that is like Mike Dillard's, one in which you have to sign in in order to gain access?

Thanks in advance for any advice you have!