The video below was made for last year's class. It is applicable still, though Blogger has changed a bit since. Also note, that it assumes you are making a new Gmail account just for this use. As an alternative, you can use your non-university Gmail account equally well, if you are not already using Blogger with it.
The main thing is to use the Blogger Profile, not the Google Plus profile. The Blogger Profile is what allows you to post under an alias. See the image below.