The first thing that you need to do is to buy a domain name.
The domain name is the unique name that you write in the browser address bar, which differentiates it from the rest of the sites in the Internet.
The domain name is important, since it will brand you, therefore it is better that you do put some thought before you decide what it will be.
I recommend that you use Namecheap to buy your domain name
Next step: Hosting
Other Lessons in the WordPress Guide:
1. WordPress Guide – Domain
2. WordPress Guide – Hosting
3. WordPress Guide – Change DNS
4. WordPress Guide – Open Domain Account
5. WordPress Guide – Install WordPress
6. WordPress Guide – Posts & Pages
7. WordPress Guide – Design Theme
8. WordPress Guide – Plugins
9. WordPress Guide – Web Form
Main Page: WordPress Guide Step by Step Tutorial