How do I transfer money from P2P?

I'm curious to know, how exactly do I transfer money from a peer-to-peer (P2P) platform? What steps should I take to ensure a smooth and secure transaction? Are there any specific protocols or guidelines that I should follow to protect myself and my funds? Additionally, are there any fees associated with transferring money through a P2P platform, and if so, how are they calculated? I'd appreciate a detailed explanation to help me navigate the process confidently.