Where to start on this one. Been casting for over a decade and it can get addicting.
I've go a Lee 10lb bottom pour pot but it clogged up and now just use my dippers. I have an electric plate but it doesn't heat up my pot hot enough (you'll need about 327 degrees, zinc is 419 degrees and stay below that) I use several molds at a time and rotate them, pour, set aside and then open another. I preheat my molds on the hot plate however. Smelting I do in my Lee although I have a 6 qt dutch oven for when I do. I scrounge whenever I'm home for wheel weights or other scrape lead. I pour my lead into a cast iron ear of corn, cornbread pan. Once they are cool, use a sharpie/paint marker to mark the ingot with either Pb for pure lead (stick on wheel weights), WW of clip on wheel weights and RS for range scrape. I have a range in the backyard I remine every so often. I used to go to tire dealers and get wheel weights but now you get most zinc and steel. Still some lead however. I toss the steel but keep the zinc for fishing weights. Keep separate items for that so not to containment your lead ie molds won't fill out anymore and hence casting below 400 degrees in the event a zinc wheel weight makes it to the pot. Have about a dozen molds from .311 Round Ball to .490 MiniBalls, single to six cavity molds.
When I start I also turn on a box fan by the window for extra ventilation and open both shed doors. My casting table is an old folding fest table I picked up in Germany in 90'. Turn on pot and hot plate, get molds and everything together (all within 4 feet). Have some sawdust, candle wax or commercial flux available to get rid of the impurities out of the lead as it melts. As you cast your bullets the mold may not fill out the bullets at first as the mold needs to get hot. Usually good to go after couple pours however. I drop my bullets unto either a towel or into a five gal bucket of cold water to water quench them (makes for a harder bullet, needed for high speed without adding additional tin/amonly (sp) or a gas check)
After bullets cool and harden, you'll possibly need to size and lube them. Two major methods are Lee tumble lube or use a sizer. I use both methods as some of my molds are Lee Tumble Lube which uses a liquid Alox that you shake onto. Sizing requires a Sizer, Lube and punch. I have a older Lyman 450. I used to try and make my own lube but easier if you just buy it. Another method is to Powder Coat the bullets but I've never done that or know the process. Now when I shoot a box of ammo only costs me the powder (7000grains/lb) and primers. 100rds of 9mm cost me $5-6 or so. .41/.44 Mag about $6-7 per 100.
RotoMetals good source as noted above and check out
http://castboolits.gunloads.com/forum.php Member there with the same log in.
Good luck!
CD