A. Instructions for Completing the Agreement. Instructions for registering a business in Philadelphia, including how to choose your business structure and get a City tax account number.Get a free Pennsylvania LLC Operating Agreement (Word, PDF, or Google Doc) to customize for your LLC. List LLC Members, tax info, and more. These forms are provided in a fillable PDF format, which allows you to enter data directly into the form using your computer and Adobe Acrobat Reader. This is the simplest form of ownership to set up. No state filing is required to form a sole proprietorship. You can use one of our attorney-drafted templates to fill out, save, and download your operating agreement for free. A fictitious name is any assumed name, style or designation other than the proper name of the entity using such name. 1. Choose your business name.