How do you master prime numbers?

So, I'm curious to know, how does one go about mastering prime numbers? Is it a matter of memorization, or do you need a deep understanding of mathematical concepts? Are there any specific strategies or techniques that you can share to help someone who's just starting out on their journey to master prime numbers? It seems like a fascinating and complex area, so I'm eager to learn more about how one can truly grasp this concept and become proficient in it.