What age should you buy a goat?

Sure, here's a question based on the paragraph "What age should you buy a goat?" with a tone of a questioner and a word count of no more than 300: "I've been considering getting a goat for my farm, but I'm not sure when the best time to buy one is. I've heard that buying a goat at a certain age can have its advantages, but I'm not exactly sure what those are. Can you help me understand what factors I should consider when deciding what age to buy a goat, and what are the pros and cons of each option? Is there a specific age that's generally recommended for first-time goat owners, or does it depend on my specific needs and goals?