Two further Samba references, although parts of them might be out of date:

O'Reilly's Using Samba

Samba/SWAT configuration help. Swat (Samba Web Administration Tool) is a popular GUI front-end for Samba configuration. Webmin, although not limited to Samba configuration, is another popular GUI config tool.
*Note: When reading documentation concerning Samba/SWAT, watch out for references to inetd. In most cases, that material applies only to older distros, as inetd is deprecated, and has been replaced by xinetd (which has an entirely different config structure).

Also, for a Linux equivalent to Windows' "Network Neighborhood/ My Network Places" network browsers, check out LinNeighborhood.