well, in part it can depend on luck, but knowledge and skill definitely are your best bet when trying to be successful with them. my first breeding female was pure luck. satanics were the first species i picked up, and i happened to get lucky enough to where my first female laid 2 clutches for me. the babies, from what ive experienced and heard, are the hardest part of breeding. they're so tiny that you need pinheads or fruit flies, which not everyone has good access to. as for the first shed, i let mine go as far as they could with it, and when it seemed like they gave up thats when i stepped in with a pair of tweezers and a steady hand and slowly worked the last bits off of their limbs and whatnot. after their first shed, which came in like the first day i think, i began offering fruit flies. i didnt actually see them eating the flies, but they would. and basically whenever i noticed the number of flies were low, i would drop some more in. after about a month or two, they were large enough to take crickets, and by that point they began growing more rapidly. at 2 months they looked a lot less fragile than they had been when they first hatched.
as for your other questions, i wouldnt buy a trio and expect things to start right away. i would keep them separated at first to make sure no one gets stressed or passes on parasites/disease. once thats done with, it could still be a very long time before you see any mating activity or anything. i have been lucky enough to where every female that i purchased that survived the first week survived long enough to give me at least one egg. even the adults can die off without showing any signs. but if you've got some good strong individuals, given time and the right conditions they should eventually warm up to one another. i have a beautiful male that i bought back in may of last year, and he has NEVER shown any interest in females, then all the sudden a couple weeks ago he started chasing other males and soon after mated with a female. patience is gonna be key!
