Hello Tanya. First is this one:
https://cgcookie.com/courses/make-it-3d-printing-with-blender
And then this one:
https://cgcookie.com/courses/printlab-your-guide-to-3d-printing-with-blender-and-a-prusa-printer
Wayne is having lots of fun with 3D printing lately, he is hooked. We can't risk him leaving animation, and now you, you can't leave animation either. We have an animation crisis in our hands.