Step 1 - Create a Gmail address for your team. The following a screen grabs of the steps that I used to create a project account for "my team" quadcopter test stand.
Step 2 - Work on adding materials to your blog...
I would suggest that you start by reviewing some of the tutorial information on the Blogger Support Page.
Your first blog post should contain
Your Team Name
A statement that gives the basic premise of your project
A team picture
A couple of videos or Arduino based projects you and your team find interesting.
