How do I choose a goat?

I'm new to the world of goats and I'm curious about how to make the right choice when selecting one. Could you please elaborate on the factors I should consider when choosing a goat? Are there any specific breeds that are better suited for beginners or for specific purposes, such as milk production or fiber harvest? What about the goat's temperament and health status – how do I ensure I'm bringing home a healthy and friendly companion? Lastly, what's the best way to prepare for the arrival of my new goat and ensure a smooth transition into its new home?