Your distro (you should put your distro in your user profile to help us answer your question) may have a gui samba server configuration wizard. Another method is to use samba swat, which comes with the samba server package (on my distro at least).
To use it, you first need to edit /etc/xinet.d/swat, deleting the "disable = yes" or changing the "yes" to "no". If your distro uses "chkconfig", then run:
# enable xinetd service
sudo /sbin/chkconfig xinetd on
# turn on samba swat
sudo /sbin/chkconfig swat on
# restart the xinetd daemon so it reloads its configuration files
sudo killall -s SIGHUP xinetd
Now simply point your web browser to "http://localhost:901". At the top of the page is a quick start wizard, or click on the SHARES tab.
When you are finished, you can stop the swat service:
sudo /sbin/chkconfig swat off
You might consider installing a samba-doc package if it is available. If you do, there will be a number of howto's and web man pages on the intro page of swat. It may also install three books, which include "Samba 3 by Example" and "Samba 3 Howto & Reference Guide". These are the same books that you could find in the bookstore published by Prentis Hall.