MarkT,
Welcome to a whole new world. I can't say you will get addicted to casting, but it's highly probable.
To start, a Coleman stove, a dipper, and a small cast-Iron skillet will get you started. Lee tumble-lube might also prove sufficient - if you use your bullets in their as-cast diameter. That will be determined by your revolvers throats. You want your bullets 1/2 to one thousandth over throat diameter. Should you have to size, the Lee push-thru sizers work quite well. Lubing both before and after sizing, with the tumble-lube, can be a help here.
Plain old air-cooled wheelweights should work fine for your use. Should you feel the need to harden them up a bit - and this isn't always desireable or necessary - then you can water-drop (quench) them, as they drop from the mold.
I would suggest at least two molds between 250-300gr. Then you can do a bit of experimenting to see which you(or your revolver) like best. Plain base bullets should work fine, but if needed, the Lee sizers do a fine job of installing/crimping gas checks.
Then you will begin to read more about casting. Probably run across a few "deals" on molds, that are too good to pass up. You might want to pick up an electric pot for it's convenience. Then, since you seem to be running out of lube constantly, you decide to go with a lubrisizer. They can be pretty cheap on Ebay. Of course, along the way, you continue to aquire various molds, sizers, etc. After you have the lubrisizer, you realize bullet lube is kinda expensive, when you cast for eleventy different calibers, so you go to
Cast Pics and learn how to make your own lube... Well, I hope you can see where this all goes. It just never ends! Welcome, and Good Luck!!!!!!!!!!!!..........Bug.