Sign up to https://openlab.citytech.cuny.edu/
Join the class website at https://openlab.citytech.cuny.edu/interactive3d
sign up to http://www.codecademy.com/
sign up to http://github.com
go to http://www.blender.org and download the appropriate version of Blender for the computer you will be working on. It will run off of a USB storage device so you can put it on a key and run it on any computer if you don’t have one of your own. Even if you use lab computers that have Blender installed you should keep your own copy so you can make customizations and modifications to the user interface.
log into blackboard through http://www.cuny.edu and make certain your password works and you are part of the class.
make a post to the class blog, introduce yourself (using whatever pseudonym you like if you want to preserve your privacy), say something about your interests in interactive 3d and include a link to something that inspired you to take a class on making this stuff (games, simulations, augmented reality, visualizations, etc). Include your github and codecademy user names. If you have problems with any of the above steps, include them in your post so I and your classmates can help you sort them out.