All computers on a network have an IP Address, but often they are given a descriptive name to make identification easier. The Domain Name System (or DNS) is the naming method used to identify Internet host computers.
For the majority of commercial and home-user needs, domain names are used to note the address of Websites and/or to associate with e-mail addresses. A Website address typically looks like www.companyname.com, and an e-mail address might be firstname.lastname@example.org . The ".com" part is called a Top-Level Domain, and there are currently six types of top level domains:
.com Commercial Enterprises
.gov Government Bodies
.edu Educational Institutions
.mil Military Institutions
.net Computer Networks (and often Internet Service Providers)
.org Organizations (usually non-profit)
Outside the US, the top-level domain of each country is identified by a two-letter code. For example, .jp is the top-level domain for Japan, and .ca is the top-level domain for Canada. Even the United States uses the .us country code for some Websites.
Domain names such as www.flmtgif.org and www.yahoo.com need to be registered with a domain name registrar, your internet provider can easily assist you with this. Please note that if someone else has taken a domain name, that domain will not be available for you to use.