Registering as an author

You need an invitation to become an author.

Accept the invitation in the email.

Then find the nine dots at the top right next to your name(Google apps) .

Choose Blogger - you may have to scroll down.

Skip the offer to make your own blog.

Set your display name. 

Then you will be able to see the option to create a new post on the top left.

For those of you have realised how to write comments, setting your display name will mean that you no longer to change the Anonymous posting.