How to swap mrph to mnw?

Could you please provide a step-by-step guide on how to swap MRPH tokens to MNW tokens? I'm new to the cryptocurrency world and am a bit confused about the process. What platforms or wallets do I need to use? Are there any fees involved in the swap? And what precautions should I take to ensure the security of my funds during the process? Any insights you could share would be greatly appreciated.