There are 4 general actions to begin your business tomorrow.
1. Obtain a Business License
2. Obtain a Fictitious Business Name
3. Establish a Business Structure
4. Open a Business Bank Account
Business that are more complex will require more steps to begin their business. These additional steps would be filing your Articles of Incorporation if you want establish a corporation, Obtaining Fire Clearance, Obtaining Conditional Use Permits, Obtaining a State Recognized Certification, etc.