I'm afraid I don't know of any. Casting and making molds is completely new to me, and I'm going in to this with no more than a few notions of how I've heard it's done. And this is simple - full sculptures get very complicated, and often involve cutting the sculpt apart in order to make a workable mold.
If you have any sculpts that you intend to only cast in plaster and are suitable for a rubber mold (no pointy or outstretched bits that would break while taking it out of the mold), you can get liquid latex and just brush over the entire thing. Do as many layers as needed to get a nice, thick coating that won't tear easily, pop out the original, then you can cast copies in plaster (maybe other materials, provided it won't stick to the latex).
thanks for replying!
Yea im pretty new to this too . I havent really even tried to make a mold yet ( ever )
i think i would have to break my sculpture apart ... how scary. Anyway my hopes is that one day i can do this again with confidence -