Peer reviewing is a hugely important part of the scientific process that ensures published articles are of sufficient quality to deserve dissemination to the wider scientific community. Building on a previous article published in this journal, this article addresses topics that potential or practising peer reviewers may find useful. These include what peer reviewing is, why do peer reviews, how to become a reviewer, what to write in a review and where to find more information. It includes a template for writing a review, and lists various websites and guidelines that can help ease the entire process depending on what type of article is being reviewed. Peer reviewing can be enormously rewarding and help clinicians diversify their scope of work while also benefiting the scientific community by contributing to the quality control of published work.