A resume is a relatively short listing of a candidate’s qualifications, employment history and achievements. Resume basics tend to dictate that this marketing tool favour brevity, although resume styles can vary. CVs, on the other hands, call for more details about a candidate.
CV styles can also vary, but most include work history, achievements, skills and the life history of a candidate. Improving your resume or CV can be an important step toward landing a position. It is helpful to review sample resumes and CVs online to get ideas for appearance, content and formatting.
No matter where you look you will always get varied degrees of advice. All I can say is just stand out from the crowd.
CV tips and advice from different sources:
University College Cork: https://www.ucc.ie/en/careers-advice/applications/cvs/
Dublin City University: https://www.dcu.ie/discovering-dcu.shtml