How to send Ethereum coins on simpleswap?

Could you elaborate on the steps required to send Ethereum coins through SimpleSwap? I'm particularly interested in the process from the perspective of a user who may be new to cryptocurrency exchanges. What are the initial steps I should take? Do I need to create an account or wallet beforehand? Additionally, what are the key considerations when choosing an amount to send, and how can I ensure the transaction is secure and goes smoothly? Finally, what should I expect in terms of transaction time and confirmation once the send process is initiated?