Okay, I haven't looked at any of the other posts -- I'm just putting down what I have and actually use on a regular basis, what I need for a small number of does.
Three calf bottles with lamb nipples on them for feeding bottle babies.
A Pritchard valve nipple for weak newborns (haven't had any with my Kinders and Boer crosses, but I used to need this when I had purebred Nubians). This goes on a GLASS pop bottle (plastic bottles have grooves in the threads which make them leak).
Iodine for dipping navels at birth.
Old towels and newspapers for drying babies off.
Milk pail -- you can get this from Hoegger's. I know a lot of people use a stainless steel bowl, but I've been using my milk pail for over twenty years, and expect it to last the rest of my life as long as it doesn't get left in the driveway and run over (highly unlikely, LOL!). It has a partial top on it which helps keep dirt and hair out of the milk, and a wide, flat bottom for better stability. I don't carry by the handle, though in theory you could -- I'm afraid it might tip too much. But it does have a handle.
Milk strainer. Mine was purchased at the same time as the milk pail, and is good for a lifetime (or several lifetimes). It uses the standard 6 1/2 inch milk filters, which are readily available at the feed stores. And it is stable sitting on top of a quart jar.
Quart jars to put the milk in: I much prefer wide-mouth jars as it's easier to clean them, and also easier to skim cream off the top. Get a couple dozen. You can find them at second hand stores and yard sales if you keep looking.
Hoof trimmers -- get the best ones Hoegger's sells, you won't be sorry. Again, these should last for many, many years, and they are one of the absolute essentials to have. Goats with untrimmed hooves are in bad shape.
Some syringes and needles -- I use 22ga. needles. Some people say these are too small, but I haven't had any problems, and the larger ga. needles are hard to insert into the skin.
I keep liquid B vitamins on hand and give by injection if needed. If you do need them, you don't want to have to wait for an order, or for the feed store to open.
As needed I purchase CD & T vaccine and wormer, usually Ivermectin.
I have an elastrator, but if you have a friend with goats who has one, you wouldn't need to purchase one right away.
I also have a disbudding iron, but again, you might be able to pay someone to disbud your babies for you -- that's what we did for the first few years we had goats.
I have a tattoo outfit, but that is only needed if you are raising registered stock. We actually got ours for our rabbits, but it works for goats, too.
Mineral feeders -- you can make or purchase these, but the goats will need free access to a good-quality goat mineral. I made the PVC pipe feeders, which are easy and cheap, but the goats can knock them apart and spill expensive mineral on the ground, so I'm thinking about purchasing some one of these days.
Shelter, including a manger for feeding the goats up off the ground. The shelter, unless you live where it gets down to fifty below in the winters, only needs to have three sides and a sound roof. I like to be able to fill the mangers from outside the pens -- that way you don't get trampled by eager goats as you are bringing their food to them. But at the same time, the feed in the mangers needs to stay dry, and the goats must not be able to get inside the mangers and walk (and poop and pee) on their feed.
Water buckets need to be positioned outside the pens, in such a way that the goats can reach through the pen to get the water, but can't get the water dirty. (If you have ducks and geese running loose, you'll also have to find some way to keep them from fouling the goat water -- they will foul all water they have access to. There's a reason they are called 'waterfowl'.) I have a scrub brush especially for cleaning out the water buckets, which get algae growing in them in the summer if they aren't cleaned regularly.
You'll need someplace dry to store hay, bedding, and other feed and supplies. I'd love to have a hay shed, but must resort to covering the hay with a tarp during the wet months. This is not ideal, as condensation forms on the underside of the tarp, and the hay gets almost as wet as if it wasn't covered. The solution is to create a space between the tarp and the hay (chunks of log, or tires, are recommended). You will also have to tie the tarp down VERY securely or it will blow off.
You'll want a separate pen for kids, preferably two of them, so you can separate the boys and girls, or separate newborns from older babies.
Oh, yes, and a milking stand. I built mine with a shelf on top so I'd have a place to set the jars and the milk pail. It doesn't have a stanchion (I've had three previous ones that did have stanchions, including one double for two goats at a time when my girls were still living at home and could help with chores). Instead I tie the does, and have a small bucket tied there also to hold their grain.
While doing chores, I tie everybody up. I have lead ropes spaced all around the pens, far enough apart that no goat can reach it's neighbor's food -- as long as I'm careful about where I place the food, LOL! I have enough buckets to give the adult goats their grain in those, but the kids each have a square of plastic tarp (cut from the ruined tarps that used to cover one of my Costco carport shelters), and I pour their grain onto those. It's easier than carrying a whole bunch of buckets around, and they take up less space.
I'm trying to think what else we actually use on a regular basis. I don't use teat dip -- have had no problems. I don't wash udders anymore, because the udders and my hands were getting cracked and dry from that. I just dust the goats off, and only wash if someone is really dirty, which seldom happens because goats like to stay dry. I keep antibiotic cream and Furall on hand. Have fly traps in the goat shelters, and sometimes a yellow-jacket trap, as well. I don't tube goats -- have never saved a goat that way, so figured it was better to let them die in peace without pouring stuff down into their lungs (which is where it will end up if you don't know what you are doing).
I think my list is enough to get started on. You'll figure out as you go along if there are other things you really want or need to have on hand. It doesn't need to be a lot of money all at once, but you do need the shelter and fencing before you bring the goats home. Also, have feed on hand, and bedding.
Kathleen