There's been a couple of people having difficulties with posting a blog, I'll just outline briefly the steps needed to be taken to start your own blog!

To start your own blog:

Click My Blog in the upper right corner of the blogs page.

To Create your blog, you need to fill out the description box, which is the short story or reason to your writing. 

"A telling of my adventures" Or something like. The general idea of what you'll be writing about.

After clicking submit, you'll be brought to the page where you can write, and post your first blog.

Leaving the viewing, rating, and comments to public setting will ensure that you get all of the most relevant feedback on your blog.

And that's it! That's all there is to creating, and posting to your new blog!