Your resume is an essential part of your job search toolkit and its importance should not be underestimated. You will need one for whatever kind of job you are looking for. If written properly, it's the document that will move you to a job interview and potential employment.
Do not approach the task of writing the resume lightly. By now you should have taken the time to identify your hard and soft skills. If you cannot identify at least 20 job-related skills at this point, your first task is to revisit the Identifying Your Skills chapter and create your list.
Be aware that your resume is never really done. You have to customize it to match the qualifications and skills sought by employers for specific jobs.
Job seekers start out at different points when preparing resumes. Some will have a resume a few months or a few years old. Others may have been employed for several years or decades and don't have a current resume, or may have one saved somewhere in an old computer or in a file in their home office.