Just need these simple steps.
- Go to http://www.blogger.com/
- Click sign up and create your account
- Once registered click, create a blog.
- To create a blog, first give an appropriate title to the blog.
- Select a domain name, and check its availablity, needs some trial n hits..
- Register that domain.
- Enter the security word given on that screen
- Select the layout, can choose any for the beginning, as can be changed afterwards.
- Create your introductory post, click publish and finally view blog.
And you are done, your first post is published. Good thing about blogger is that its absolutely free. Else you can also try http://www.wordpress.com/ , another popular platform.
I will go on updating this post based on further queries.