How to sell Theta for USD?

Could you possibly elaborate on the process of converting Theta tokens into United States dollars? I'm interested in understanding the steps involved in this transaction, from accessing a suitable exchange platform to withdrawing the funds in USD. Could you also provide some insight into the fees associated with this conversion and any potential risks or considerations that I should be aware of? I'm a beginner in the cryptocurrency space and would appreciate your guidance in this matter. Thank you for your assistance.