>>2430919You need land: plain and simple. "Stealing" land, and letting loose a tribe of goats is a good way to never realize your dream in its greatest form. Consider moving somewhere else if legal acquisition of land is not feasible, but not before you save up a few years' worth of minimum wage income.
As for the goats themselves, and livestock in general, it is quite easy in theory: they need food, water, and would do well with space to roam. Goats are hardy animals, but they're also ornery, voracious non-ruminants, so any space you do give them will be stripped clean, and they will devise their various methods of escape. Goats, furthermore, cannot subsist alone on pasture, the way that a cow or a sheep can, so you will have to have a more complex, self-sustained food system to keep them up-and-running, or you will need to supplement their feed, which costs money. I do not like goats for these reasons.
Have you considered sheep, OP? Smaller than a cow - less paddock space needed - and less "free-spirited" than a goat. Easy to train. A common complaint for sheep is they are disease-susceptible, and it may be true to a degree, but it is mismanagement of pasture, and the sheep's exposure to fecal matter, etc., that makes them sick. You can even get hair breeds to avoid shearing, should you not want to mess with that massive pain in the ass. I can provide more information on pasture management as needed.