If you missed STEP 1 you can find it right 'HERE'.
Why is it important to choose the right Domain for your website?
Your Domain is your identity on the internet. It is unique to you and your content and it cannot be duplicated. It is like a briefing of the personality of what your content is. It is always important to choose the right domain and it is one of those steps where people neglect and hence is very underrated. It is always important to choose the best domain and web host when you are just getting into Blogging or Content Creation. I really recommend Godaddy as your Domain Registrar. They are the world's most popular Web Registrar and they are preferably cheap. I would recommend that you choose Blogger as your Host initially as they are free to start off with and you can always change it to some other paid Web Host in the future like SquareSpace or Wordpress.
You can create a domain right here at Godaddy and create a free Blog from Blogger here.
STEP 3: CREATING CONTENT