As many of us enter the world of science having little experience in peer review it is relevant to describe it in more detail and provide some useful tips about the process. By the time some of us finish university, we might have some general idea and knowledge about how peer review works by submitting own manuscripts and, hopefully, getting published. However, what happens if a person is about to become a reviewer oneself? This changes perspectives considerably. Thus, many early career scientists who become reviewers have not only insufficient experience, but also lack knowledge on the matter. That is why it is important to share some useful insights on how reviewers’ work looks like and on what one should be focused on when going through a big number of submitted texts in order to choose the best ones.