I absolutely love goat's milk and I would love to keep goats, but they are every possible kind of a pain in the tits to deal with.
A neighbour of mine had a goat that we thought had some terrible thing happen because she was choking and gagging and frothing at the mouth like some cartoon rabid animal. Nope, far simpler. She'd eaten a grey lycra-and-elastic sports bra off the washing line, got a bra strap hooked over her tongue, and the rest of the bra down her throat. Hooked the strap with my finger, pulled it out in one quick deft rather unpleasantly squelchy motion, and ten seconds later you'd never have thought there had been anything wrong with her.
The bra went in the bin.
Bloody goats.
Your friends either need to learn how to care for goats - if only there was some world-wide repository of knowledge with books and videos and stuff! - or give them a good home somewhere else. They're probably hard to milk because as you say they're not used to being handled, and it may be too late to do that by now. If that's the case, you may never be able to milk them no matter how you handle them, and maybe you can breed from them, or maybe you can give them a nice new home, cosy and fragrant, along with some onion, garlic, ginger, cumin, coriander, and chilli, with a kilo or so of spinach too.
As an aside, you probably want to get yourself a copy of "Self-Sufficiency" by John Seymour, and have a read of that.