How to buy OKB coin?

Could you please elaborate on the steps involved in purchasing OKB coins? I'm particularly interested in understanding the registration process on a reliable cryptocurrency exchange, the verification procedures required, and the funding methods available. Additionally, I would like to know about any fees or commissions associated with buying OKB coins, as well as any safety measures I should take to ensure a secure transaction. Could you also provide insights on the best time to buy OKB coins based on market fluctuations? Thank you for your assistance in guiding me through this process.