Tue Jul 26, 2005 12:49 am by Argh
To be perfectly real about things...
Well, whatever is something you're excited by is a pretty good subject. And the fact that you'll have a reference model will really, really help you.
But, that said... something like a Gundam, with lots of parts, difficult angles, and tricky curvature... is probably going to be a lot to bite off for a first project.
I've taught some 3D modeling to children before (5th-graders) and I started them off with extremely simple things, like a simple rocket-ship consisting of a single lathe object for the body and a pair of extrudes for "wings". Later on, I taught how to use booleans. I couldn't teach them lofting, pathed extrusions, or any of the harder things- it takes awhile for people to really figure out how to do these operations, and they're not terribly intuitive.
If you're working with a modeler like GMAX, you can start with some simple lathed curves and then push/pull verts to build many shapes, but it's a very clunky way to model anything that needs to be exact, and when you get better at it, you'll realize how inefficient that tends to be. However, it's still the best way to model anything organic, and probably always will be, until musculature/bone/skin simulators become a lot more user-friendly, not to mention cheap and not insanely processor-intensive.
At any rate... if I were you, and had zero experience... well, I'd start with something very, very simple for your first project.