I was using Geogebra to help create educational material. It can create the most stunning pictures, and I'm glad I found it. I'm still learning as I go, and I've got a long way to go haha I'm interested in most levels of Mathematics, more for teaching and examples, less rigorous, more intuitive. I had enough rigor as an undergraduate at West Virginia University. I've recently been using it as a teaching aid. My students absolutely love the wealth of resources available.