What tools/assets did you use?
Unity 5.6 and the Unity Roll-a-Ball tutorial. (Also Google.)

What tool(s) or technique(s) you were learning? What progress did you make with it/them?
I was learning how to work with a 3D Unity project, which I had not worked with before. I feel like a got a basic grasp of the fundamentals of the 3D space (including primitive shapes, the game camera, and object movement), as well as a few bits of deeper knowledge for some of the things I tried to implement outside of the tutorial.

Anything else you'd like viewers to know about this submission?
It's WebGL, so you can play it in your browser.