Sarkisov links are useful tools in birational geometry: they can link two Q-Fano 3-folds by means of Kawamata blow-ups, extremal contractions, flips and flops.
I will give an overview on how Sarkisov links work, providing some examples, and I will state some theorems about classification of Q-Fano 3-folds which strongly involve Sarkisov link techniques. This will then lead to a glimpse of my current research.