There are many domains you can get for your site.such as .com , .us , .ws etc.But in those domains they will charge you some amount of money.I would recommend for beginner in the field should try something free.
So the idle place for a beginner is www.blogger.com .This is the best and most popular free web host.You can get a free domain as you always wanted.Sign up with this by your existing gmail account or newly created account.
This is a Free Domain you can have many features as you wanted.So after the sign up you can your create your own blog.Give a name to the blog address goes with the web site topic as i mentioned below.
Select a nice template which can make your blog more attractive.Then you can post your own things,place ads and many more after selecting a template.