How do I buy from OKX?

Hello, I'm a new investor interested in purchasing cryptocurrencies through OKX. Could you please guide me through the process of buying from OKX? I'm not sure where to start and would appreciate any step-by-step instructions. Specifically, I'm interested in understanding how to create an account, deposit funds, choose the cryptocurrency I want to buy, and execute the purchase. Additionally, I'd like to know about any fees or charges involved in the process. Thank you for your assistance.