Rolling your r's, in other words pronouncing a 'trilled r', is one of the harder aspects of mastering Polish pronunciation. It's a common sound in languages including Spanish, Italian, Czech, and others. It's also present in some English-speakers' accents (hello Scotland) – but it's absent from many other English-speaker's accents, so it may not be immediately obvious how you do it. Below are a couple of videos that explain how to sneak up on it, step by step.
