How do you buy crowns in eso?

Could you please explain the process of purchasing crowns in ESO? I'm new to the game and am a bit unsure of how to navigate the in-game store and make a purchase. Are there any specific steps I need to follow, or is it a straightforward process? Additionally, are there any payment methods I should be aware of that are accepted for crown purchases? Lastly, are there any limitations or restrictions I should know about when buying crowns in ESO?