1. You say: "but I dont know anything about reloading.
Do you have a book? The ABCs of Handloading is good, and if you want to load cast bullets, the Lyman manual has the most information of any.
2. The bullet advertisement you link shows 125 and 147 grain cast bullets. The 147s would probably do quite well, but I have seen more people disappointed by lightweight cast 9mms than any other projectile.
I think you would do better to spend a little more and learn on jacketed bullets, then move on to cast as you gain experience.