Start creating a resume or cv. There are templates you can use and later print. Since you have no work experience, you’ll have to rely on experiences related to the employment you’re seeking. If you’ve voluntarily shoveled snow, babysat, or cleaned yards, that’s relevant. Be sure to list all these experiences, because the potential employer can get an idea of how ambitious you are, and willing to put forth the work habits needed, like punctuality, attendance, and a sense of urgency while on the job. Look online for examples of job applications too, so you’re aware of what you’ll be asked, and prepared to answer the questions: 3 reference’s phone numbers for example, (who aren’t relatives, who can attest to your personality or work habits - this could be a neighbor, coach, teacher, etc.). Be sure to ask permission to use them as references, out of courtesy and so they’ll have a heads up if the job site’s rep calls them.
Apply for an application at each site, don’t bring anyone with you, have a writing utensil handy and dates, numbers, or important names you can refer to. You can also take it home and complete it.