How to transfer ETH to mantle network?

Could you kindly enlighten me on the process of transferring ETH to the mantle network? I'm somewhat unfamiliar with the intricacies involved in such transactions and would greatly appreciate a step-by-step guidance. Are there any specific requirements or prerequisites that I need to fulfill before initiating the transfer? Additionally, could you also elaborate on any potential fees or charges associated with this process? It would be helpful to know if there are any security measures I should take to ensure a smooth and secure transfer. Thank you in advance for your assistance.