New medium: 3D modeling!

I recently had the chance to try out 3D modeling for the first time! This apple here is the first model I've made!

I haven't had a particularly strong interest in getting into 3D modeling, but a friend offered to teach a group of us how to get started in Blender and I figured I'd give it a shot. And it turns out, it's pretty dang fun! It's exciting being able to manipulate objects without having the constraints of reality to deal with. I am finding it tricky just getting used to how to work with Blender, though, and this definitely was frustrating at points. It was sort of a mind puzzle for me at points, too, because I actually have pretty poor spatial visualization--so it was a challenge trying to figure out, say, how to extrude a quadrilateral off of a triangle (I had the biggest struggle trying to make the apple's stem). But I sort of made this as my 'homework' after the lesson I got, and it was pretty cool poking around on my own and gradually figuring out how to make things work and do what I wanted!

I made this in Blender, starting with a sphere and manipulating each of the horizontal rings of vertices with scaling and up/down translation to get the apple shape. It took a solid while of just trial and error to figure out what that shape should be and how to translate my mental image of an apple into angles and polygons: should this section be one face or two, where are the points where the angle should change? 90% of my work on the body of the apple was probably just selections and transforms. I wanted to use the loop cut a few times when creating the indent at the top, but Blender was being stubborn about letting me apply the tool to a concave section, so the rest of my work on that part ended up being done by extruding edges and making new faces. The stem was last, and which was done by cutting a small face near the center of the apple with the knife tool and extruding from there. This is where I faced my biggest difficulty: the face I cut from the middle of the apple's top had to be a triangle, it seemed, because those center faces were triangular. But I wanted a quadrilateral for the stem. I ended up extruding that small triangular face I'd cut, then cutting again across the top of that new extruded face to split into into a triangle (which I wanted to get rid of) and a quad (the stem). In a big mess of trial and error, I eventually deleted the faces around that extra triangular section and closed up a new face over the side of the stem. It seems to have worked, but I have a feeling there was probably a much more elegant way to achieve that. It also didn't dawn on me until much later that I could have made another small ring of edges at the center of the apple and extruded that up for the stem, instead of cutting a new asymmetric geometry.

Thanks to @renmakes for teaching me about some basics or 3D modeling and how to use Blender! Go check out his work; he's making some really nifty and cute stuff!