How do I transfer ETH to Starknet?

Could you please explain the process of transferring ETH to Starknet? I'm interested in understanding the steps involved and any potential considerations I should take into account. Could you also clarify if there are any specific requirements or tools that I might need to facilitate this transfer? Additionally, I'm wondering if there are any associated fees or costs involved, and if so, how do they work? Thank you for your assistance in helping me understand this process.