Absolute beginner goatkeeping?

Howdy! Looking for absolute beginner advice for goat keeping. I want them to clear a very brushy ten-acre area. No plans for milk or meat, just lawn mowing. Thoughts? Do I have to feed them other than in the winter if they're browsing? Fencing/tie-ups? Housing? How good are they at clearing areas, will they take down shrubs? And how quickly do they work?

I know you said not dairy yet; however, Kate's goat book is absolutely fantastic.  

As for diet, it depends on the brush, the soil (which influences the nutrients in that brush), the goats (both bred and individual personality), and a few other issues.  But in general:

water - always

fencing - epic quality - if not, then maybe think about some of the older breeds of sheep like black welsh mountain that forage like goats.

housing - plenty and with good air flow.  Goats think they are allergic to rain.  They also want a lot of shade and wind protection year 'round

salt - always

minerals - probably (but custom to your location and needs)

If you have a rent-a-heard or rent-a-flock service in your area, it might be worth asking for a free consult to see what they would require for the animals and think about the landscape.  

Always give them plenty of water. Have really good fences. And protect any trees within the pasture area. Goats can and probably will strip the bark off the trees. If there is any poison ivy with the area, the goats will get the sap on themselves. It won't hurt them, but it will transfer to you if you pet them. And then you'll have poison ivy. Check their hooves now and again. They often will need trimming at least once a year. Plenty of how-to on YouTube. Walk the pasture now and again to make sure they still have plenty to brouse, and to check the fences.

rr: the brush is all goldenrod, multiflora rose, osier dogwood, silver berry, ironwood, and thorny ash.
does the water have to be changed every day?
Fencing: could I put them on a leash or run?
Housing: could I do  this pallet house? Too open?

I change my goats water 2x a day no matter what they are eating.  I feel there are too many dangers in trying to keep a goat on a leash of any kind unless a human is present at all times.

The pallet shelter is fine in the summer.  Depending upon where you live, I would, at least, enclose the sides in the winter with lots of straw for bedding,

It'll probably be a long time before we do this, but we were throwing around the idea of a couple goats for brush clearing at our place. I was thinking to try training them to those GPS collars you can buy for dogs. When I bought mine I think they were a little over $100 each, so pretty affordable compared to fencing. We have dogs to protect them, so I wouldn't need fencing to keep animals out. If you're comfortable training dogs and have the time, the GPS set up might be worth a shot.

https://permies.com/t/219013/GPS-collars-goats