How do I get Crypto on OKX?

Could you please elaborate on the steps required to acquire cryptocurrency on the OKX platform? As a potential user, I'm interested in understanding the entire process from signing up to funding my account and ultimately purchasing crypto. Are there any specific requirements or documents needed? Also, what payment methods are supported on OKX? Additionally, is there a minimum deposit required to start trading? And lastly, how secure is the platform when handling sensitive financial information? I appreciate your assistance in clarifying these points.