Things you should know in order to get started with your own blog:
1. Decide what your blog should be about. Something which you know about and find interesting to keep your blog up to date to keep your readers interested. A blog can be personal or some experiences you want to share.
2. Decide on a platform you wish to develop your blog like cms which eases the process of maintenance and updates.
3. Decide on a design what you think would best describe you and your blog content.
4. Pick up a name for your blog and check if the domian name is available.
5. Decide on a web host like go daddy, 1and1 etc.
6. Now you are ready to go with your first post.
7. To make your blog popular and to drive more traffic to your site make sure your blog is optimized for the right keyword.