Although trichoscopy has only recently been introduced in the assessment of hair and scalp disorders, it is already considered an essential diagnostic tool by many experts in the field. This article discusses topics that are often a source of doubt among clinicians, and tips that may help dermatologists better perform trichoscopy. Subjects include fundamental concepts needed to start performing the method, basic trichoscopic structures, tips to identify a scarring condition and to approach a patient with a receding hairline, features that are unique to children, those that are typically seen in the dark scalp, and pitfalls of the technique.