How do I convert my ETH to USD?

I'm curious about the process of converting my Ethereum (ETH) to US dollars (USD). Could you please explain the steps I need to follow? I'm a bit new to the cryptocurrency world and want to ensure I'm doing this correctly. Do I need to use a specific exchange platform or can I do it directly through my crypto wallet? Also, are there any fees involved in the conversion process, and how do I calculate them? It would be helpful if you could provide some insights into the best practices for converting ETH to USD securely and efficiently.