I would recommend checking out this thread to find out the split method of soaping milks. It is SO much easier, no mess, no burning the milk w/lye, you want to maybe keep an eye on the batch for overheating, but you'd have to to that with milks anyway. A lot of the mavens on the board use it. Thank God I found it, I don't think I would make milk soaps otherwise.
Look for Irish Lass' post and ask away ...
http://www.soapmakingforum.com/showthread.php?t=19596&highlight=milk+split+method+irish+lass
ETA: I am kind of w/Gems, though, it is kind of a good idea to make some basic soap batches first, just to figure out how the soap will behave, what you need to look out for in a recipe that you like. And then start adding stuff. And learn from my example, take good notes from the beginning! I donated all my soaps save a few samples at the 3 mo. mark - @ 40 batches - b/c I had millions of scraps of paper and no idea what went with which soap, hence no idea of what went into those I liked and those I didn't when I used them.
I use Evernote, I run soapcalc, cut and post the soapcalc print/view recipe page into a new Evernote "note" for each soap, write down everything I add/do in the "additives/notes" section at the bottom, attach a pic, and print it out two copies so that I have one with me when I make the soap, and one to put with the soap batch as it is curing/when stored.
It doesn't take long, and you will probably want to send me chocolates in about six months