How to sell Bitcoin in NiceHash?

Excuse me, could you please explain the process of selling Bitcoin on NiceHash in a step-by-step manner? I'm a bit new to this platform and I'm having trouble navigating through the selling process. I've heard that NiceHash is a reputable platform for selling and buying cryptocurrencies, but I'm not sure how to proceed. Could you guide me through the necessary steps, including creating an account, depositing my Bitcoin, and listing it for sale? Also, what are the fees associated with selling Bitcoin on NiceHash, and how do I ensure the safety of my transactions? Thank you in advance for your help.