Take classes and learn the skills they are looking for in their employees. In many areas, you can start in a volunteer position, and with hard work and dedication, you can move into a paid position.
Your resume is not the only thing employers take into consideration when they are deciding candidates to interview. Most people in hiring positions today want a personalized cover letter that explains why you feel you are a good match for their company. This letter is not meant for merely listing the qualities and skills you believe you possess; you need to include concrete examples of your accomplishments that display those skills. Also, your cover letter should include information about your prospective employer, so they know you have already done some research. Using the name of your potential boss and any particular accomplishment, they have that you are impressed by will help you stand out in the hiring process.