How do you use an orbit reader?

Excuse me, could you please explain in detail how one goes about using an orbit reader? I'm particularly interested in understanding the setup process, the user interface, and any specific steps required to get started with it. Additionally, are there any common issues or challenges that users tend to face when first using an orbit reader, and how can these be overcome? I'd appreciate any insights or tips you might have to offer. Thank you in advance for your time and assistance.