My husband and I have been doing sport bike stunt shows at town events for the past 3 years now. We have been listing it as a hobby on our tax returns for the money we have earned. However our shows have went from 3 the 1st year to about 12 so far this year. We are wanting to start selling shirts and other items along with the show and turn this into a business. I'm not sure what all the forms I need to fill out. I want to open a DBA account at my bank but they are requiring me to have a tax ID number. I live in the state of Oklahoma and I'm getting no help in my quest to create this business. Can you please give me some answers? I would appreciate any advice you have to offer.