Starting an online casino involves several key steps. First, research the legal requirements in your jurisdiction and obtain the necessary licenses. Next, choose a reliable software provider to ensure a smooth gaming experience. Develop a user-friendly website with engaging graphics and secure payment options. Implement a robust marketing strategy to attract players, including promotions and bonuses. Finally, prioritize customer support to address player inquiries and issues promptly. With careful planning and execution, you can create a successful online casino that stands out in a competitive market.