i good place to start is by having a good read of the lyman cast bullet manual and also have a look at this thread for info on lead smelting.
http://www.canadiangunnutz.com/forum/showthread.php?t=472249
Casting your own bullets will save you allot of money and you will shoot allot more.
I like casting my own because i also like to tinker allot with different casting parameters.
Casting can be as easy or as in depth and intricate as you want it to be.
Some casters like to cast bullets that will create 1 to 2 inch groups at 100 from whatever alloy they find and will satisfied with that.
other will work down to the nitty gritty. They may weigh each bullet and use very specific alloys and try to push the envelope.
I consider myself in the last group of perfecting my lead bullet loads but that’s just me.
If you’re looking for supplies i found that reloaders.ca has a good variety of casting equipment on hand.