I have had a couple of different breeds, but there is literally many breeds, like cattle, but much more colour variety.....
Goats are ruminants, like sheep and similar too cattle, but are also strong browsers, the video may be funny, but goats like to climb, that tree full of goats is not fake, although most domestic ones wont be trying to climb high into trees, but you better believe they will climb your car, or anything else that is around, and often that means fencing..... corners of fencing with a 45 degree brace is an invitation to go walk about
Anyways, I would be less worried about escape with only 2, just make sure you do not leave or let into house yard or where your nice cars are.
Re feed, sheep and goats are sensitive too too much copper, so you cannot feed them everything that your cattle eat in regard to made up pellets, as far as grasses, novel feeds, hays, grains, they can have the same, just remember with grain etc the rumen is much much c\smaller, so you cannot let them have at it with those concentrated feeds, lock it up well... hays and pasture, no drama, give them your food scraps minus any meats, just look at what is bad for any ruminant & keep that away.
They survive fantastically in bush or wild areas, so are pretty hardy.
Also, they can eat weeds & their system is actually able to kill those seeds, so they do not spread them around your property, like blackberry....
