Plastic miniatures are terrific and I have a whole series of tutorials that show you how to sculpt them, make the rubber molds and cast them. All of those tutorials can be found on my miniatures home page. But, in my opinion, metal miniatures are the best. You simply cannot beat them. The look, feel, and weight of them just makes them better.
But, they are a bit more difficult, and expensive, to make. So I have been experimenting with some low cost and easy solutions to this problem. Here is a video showing you how I have successfully made some metal miniatures. I am continuing to work on this challenge of making metal minis easy and quick. So more will be coming.