How do I buy from KuCoin?

Hello, I'm considering purchasing some cryptocurrency through KuCoin, but I'm not entirely sure how to proceed. Could you please explain the process in a step-by-step manner? I'm specifically interested in knowing what kind of account I need to create, how to deposit funds securely, and what security measures KuCoin takes to protect my assets. Additionally, I'd like to understand the fees involved in the transaction and if there are any limitations or restrictions I should be aware of. Thank you for your assistance in navigating this process.