You are probably thinking that being the concierge to the executive of a big company will be a piece of cake, think twice. Although you will make good money being someone's personal concierge, it is a very challenging job in which you will be expected to deliver what has been asked of you, on time, with a smile. That said, you will normally be paid very handsomely for your services.
File with the appropriate federal, state, and local governmental agencies. Depending on the business purpose of your LLC and the jurisdiction in which you organize, you may have to file additional forms relating to LLCs with certain governmental agencies. Each industry is regulated differently—as is each local jurisdiction—and so it is best to ask an attorney or accountant for assistance in this matter.