If you recall the overview of setting up Drupal for Blogging, there is a little bit of configuration to do to enable the blog features. Enabling the blog features requires a little bit of skill with Drupal administration, so let's do a quickie tour of it first.
On the front page of your newly created site is a welcome message which explains some options. It's all very well and good what is said on this page and worth your time to read. The important thing is the link named 'Administer'. This link leads you into the land of Drupal Administration.