Well to be honest run away while you still can......
Seriously it is a hoot to me. I am almost as bad as someone else here in that once I get some poured up I almost hate to shoot them. Note I said ALMOST.
It is very rewarding to start from a chunk of lead that could for all practical purposes simply be used for a doorstop. The after heating it to the proper temp, skimming off a little gunk, pouring it into several hundred nice new shiny bullets. Then you take them out, if you have your own place to shoot, and have a ball, recover them all bent up and dirty, and go through the process all over again.
Of the two mentioned I would say the 9mm seems to give the biggest issues. They are sometimes all over the board with barrel dimension, and they run at higher pressures than most other calibers. However there is plenty of info on how to get them going posted up here and over on Castboolits as well.
Don't get it in your head you need HARD, and you will have half the battle won. Something in the area of just plain ol clip on wheel weights is plenty for around 95% of the handgun rounds out there, and softer can be used in the majority of those.
Another place to look is
www.lasc.us There is a ton of info there as well.
If your really serious about casting locate your lead now and worry about what to do with it later on. As mentioned the wheel weights are disappearing fast, but there is range lead coming along to fill the void. If you can't find it, or mine it, look around and see if you can buy it. Usually one can get 65'ish pounds delivered to your door for around .85-$1.00 per pound. If you think this is overly expensive, here is a little breakdown on what it entails.
65# of alloy = 455000 grains
455000 grains = roughly 2900 - 158gr .358", or 3640 - 125gr .356" cast bullets.
So when you start putting pencil to paper to see how well you will come out, be sure to figure in what commercial cast cost per hundred, include the shipping, and if they even have a bullet your really wanting to use. This is what got me into casting in the first place. I was paying around $85 dollars per 200 cast bullets for my 454. The I added up what my savings would be and it was a done deal at that point even with me buying the lead to do it.
There will be plenty of other helpful hints once you get decided on a basic line of equipment. Just do some reading, make up a list, then come back and ask before you buy.