getting started w/ a small business

So recently my parents decided i need to make my own money and start paying for a portion of my phone bill and all of my Band fees and have been pushing me to start a small business. As much as i want to do this it just makes me anxious on how to start, And my consequence would be not being able to have a phone or anything i cant pay for, I dont know what to do to start up this idea and i feel like i cant make sells quick enough. Is there any help i could recive from anyone?