Setting up Blog for the First Time

I found the YouTube video on how to set up a blog, very useful, as I do better watching how to do something rather than reading how to do it.  I have never used a blog except one time and it was someone else who set it up, so this is my first time creating a blog.  I'm interested to see what kind of response I will get from my students and how much more time this will require me to commit to work than I already do.  My main concern is that students will not follow netiquette and may not be respectful of each others' varying opinions.  My other concern is that this will be one more place that I must go to view "homework" or "assignments" and give them a grade in order to get students to participate. 

Hopefully I'll have nothing but a positive experience using blogging.