Website Name

The website name or URL as it is known in the trade is pretty important.
The importance of the URL is often debated, but one argument seems to make more sense than the others. Search engines don't like too many parameters in the URL (easy to confuse the spiders with & and ?) and people can't read those long URLs and tell what they mean at a glance either. The people aspect here is especially important, because they're the ones clicking and they need to understand where a link will take them in the blink of an eye.
Therefore: keywords in the URL are a good idea and the best keyword is - alpacas - hence my own choice of URL which is www.mulberryalpacas.com .

You should be able to create a URL that includes your farm name and the word - alpacas - without having to buy anything.

The piece that comes after the name is called the top level domain and by far the most popular is .com but there are others such as .biz .net .org and so forth in fact there are hundreds so if you want to check them all out go here.

On balance I would use .com if at all posible because that is what people type as a default...... if you are a .net you might just miss out on some traffic when people forget and type .com.
Having said all of that if you are a cooperative (See the Rochdale Principles) then go for .coop

So you could even create a web site www.alpaca-fiber.coop if you wanted to......