I bought a lee 4/20 lead pot, an old cast iron pot, lee ingot mold, some cheep stainless steel cooking ladles, and my chop saw. Do not smelt lead in the pot as the slag and other impurities over time will impregnate the sides and creates minor issues when you pour in the mold. smelt wheel weight, pure lead, 50/50 solid core solder, grandmas old pewter junk, or what ever you have in the cast iron pot. Flux with the sawdust you create with your chop saw. note on saw dust try to avoid pressure treated wood it wont harm the lead, but it smells really bad and if you wear a dust mask instead of a sealing respirator that #### is going straight to your lungs. create ingots from the lead, once their made only use that in your lee lead pot. just a side note i own 2 post, 1 for pure lead casting, and 1 for hardened lead casting.
As others have said here get the Lyman loading book. I am sure you could find a copy of No. 48 in pdf for free is you look through some posts on here, as well as the lee modern reloading book. I use the lyman 120gr tc and just bought the a lee 124gr 6 bullet mold. I have used lee alox lube to good results, however i am going to begin powder coating. casting is fun and it gives you a new level of experimenting with loading.
the previous posts have provided excellent information, use all, as well go online and watch videos, read every bit of information you can.
Welcome to the wonderful world of loading any pistol for cheaper than 22lr