How do I withdraw from arbitrum?

Could you please elaborate on the process of withdrawing funds from Arbitrum? I understand that it's a decentralized finance platform, but I'm not sure about the exact steps involved in withdrawing my assets. Is there a specific interface or process I need to follow? Additionally, are there any fees associated with withdrawing, and if so, how are they calculated? It would be greatly appreciated if you could provide a clear and concise explanation of the entire withdrawal process, including any potential risks or limitations I should be aware of.