To effectively teach friends about roulette, focus on a hands-on, interactive approach that combines visual aids with practical demonstrations. Start by explaining the game's basics using a miniature roulette set or visual representations, covering the wheel layout, various betting options, and odds. Engage your friends with practice rounds using fake chips to make the learning experience more tangible and enjoyable. As you progress, introduce concepts like house edge and probability to give a realistic understanding of the game. Discuss popular betting strategies while emphasizing that no method can guarantee long-term profits. Throughout the session, stress the importance of responsible gambling and frame roulette primarily as a form of entertainment rather than a money-making opportunity.