Register Your Domain Name
What is a Domain Name? A meaningful, "easy-to-remember" name used to identify a person, business, service or product on the Internet. Every Website you've ever been to, and every E-mail you've ever sent or received, has a Domain Name in its address.

How does the Domain Name system work?
The Domain Name System (DNS) is a global network of servers that translates Uniform Resource Locator (URL) like www.1stsitefree.com to a numerical IP (Internet Protocol) addresses 64.71.185.200, which computers on the Internet use to communicate with each other. Without DNS, we'd all have to memorize long numbers instead of URLs or E-mail addresses. What a mess that would be!

Internet Corporation for Assigned Names and Numbers (ICANN)
Icann coordinates the assignment of Internet Domain Names, IP address numbers, protocol parameter and port numbers and identifiers that must be globally unique for the Internet to function.

Domaim name guidelines
The main part of the name ('1stsitefree') can only contain the letters a-z, the digits 0-9, and a dash (-).The dash can't be at the beginning or end of a name.
Underscore (_) and other special characters are not allowed. The name may not exceed 63 characters, excluding the characters used to identify the Top Level Domain (such as, .com, .biz, .info, .net, .org).Upper and lower-case characters are equivalent: 1STSITEFREE.COM is the same as 1stsitefree.com. The end of the name (e.g. '.com') is called the TLD (Top Level Domain). Conventions for TLD's are discussed below.

What is a Top Level Domain?
There are three types of Top Level Domains (TLD's): generic Top Level Domains (gTLD), restricted Top Level Domains (rTLD) and country code Top Level Domains (ccTld).

What is a Registry?
There is one Registry for every Top-Level Domain (TLD). The TLD is responsible for maintaing the master database of Domain Names for a particular TLD. Every TLD Registry (gTLD, rTLD and ccTLD) has its own policies and procedures that Registrants (name holders) in that Registry are subject to change.

Most common domains
The most common domains are gTLD's generic Top Level Domains), are .com, .info, .net and .org. Anyone can use this domain, and it doesn't matter what country you live.

VeriSign is the current Registry of .com, .net and .org domain names. The .net and .org domains will be reassigned by ICANN in the future.

What is a Domain Name Registrar?
Registrars are companies that compete with each other and enter new or renew domains into a TLD Registry(s). Domain Name Registrars can set their own registration and renewal fees. All Registrars are required to collect the same information.
The differences between Registrars are basically: price and service.
Registering a domain name. Domain Names aren't free. But, if you are a serious about your business, a Domain Name is the best investment you can make.