How do I post?
You can't post until you are granted member status. Once you sign up for the website, you should allow ~24 hours for the course admin to approve your request for membership.
When you log in (as a member), your information will be added to the Members page. Once you are added to the Members page, the course admin will grant you permission to write and comment on blog posts. Here too, you should allow ~24 hours for the course admin to approve your request for writer status.