Many thanks, to both of you. In all honesty I guess I was just very eager to kind of just jump right into it, and didn't put too great of an amount of thought in. What few details I found about iron casting weren't acquired without me checking through the workings of non-ferrous metals, so looking back now I think I pretty much know everything I would need to start with the simpler, non-ferrous metals (such as bronze, aluminum, etc)
But as always over-zealousness can lead to failure, so yes I suppose it would be a much better to start off with simpler metals and work my way up.
One problem I encountered, however, after looking throughout the web and forums, is that I cannot seem to find steps on how to combine the tin and copper together to make the bronze. I would assume it's essentially just as simple as melting together a certain ratio of each metal together in the crucible, then pouring the molten metal into the mold (graphite ingot mold presumably).
I'm not sure if it's my attempted search phrases to find any guides on it, or what, but as I said I simply cannot find any guides on it anywhere.
But as my first post stated, this is something that I'm newly looking to try my hand at, so please forgive my inexperience/naivety.
Anyhow, much thanks on the previous tips.