Before registering a domain name, it is wise to take a few things into consideration.

Firstly it should be as short as possible. If your domain name is too long your visitors will be more likely to forget it or get it mixed up with another similar site.

Secondly it should c ontain keywords relative to your site's content - this site is a guide to internet marketing and has these keywords in the title. This can help as part of Search Engine Optomisation

Thirdly when choosing a domain name, be carefull with the wording, for instance if your site was about cats and dogs, you may think www.catsanddogs.com would be a good choice, however having one word ending with the same letter the as next word starts can lead to customers inadvertently typing in the wrong name. A better name would be www.dogsandcats.com

Besides choosing a suitable domain name that is available, you have to choose who to register it with, once your domain name is registered you have to host it somewhere, the likes of www.GoDaddy.com provide free hosting, however if you intend to run a professional site it is best to upgrade your hosting with them or have a look at some of the great deals on hosting here

Another good company for domain name registration is register.com