How do you use an orange juice juicer?

Excuse me, could you please elaborate on the process of utilizing an orange juice juicer? I'm particularly interested in the steps involved, from preparing the oranges to actually extracting the juice. Is there a specific technique or method that you recommend for achieving the best results? Additionally, are there any common mistakes that one should avoid when using an orange juice juicer? I'd appreciate any insights you might have on this topic.