How to prepare oranges for juicing?

Excuse me, I'm trying to get some insights on how to prepare oranges for juicing. Could you please walk me through the process step-by-step? What's the ideal way to wash and clean the oranges before juicing? Should I peel them first or cut them into halves? And also, what's the most efficient way to extract the juice? I'm particularly interested in any tips or tricks that can help me maximize the yield and keep the juice fresh and tasty. Thanks in advance for your guidance!