Some unscrupulous publishers or individuals will try to convince you to work for them for free, "for exposure", "for experience". Your time is better spent developing work on your own for your portfolio and website.
Your resume does not have to be complex, nor should it be more than one page. Always include all your contact information. A client page can also be added to your website. Make sure your resume has correct spelling and grammar. Use a simple typeface and clear graphic design.