How to use Dydx?

Could you please elaborate on the usage of Dydx? I'm interested in understanding how it works, from setting up an account to executing trades. Could you guide me through the process step by step? Also, are there any specific requirements or prerequisites that I need to fulfill before getting started? Additionally, could you share some insights on the fees and charges associated with using Dydx? I'm particularly interested in understanding the cost-effectiveness of trading on this platform. Thank you for your assistance in helping me navigate this cryptocurrency trading platform.