Look for courses taught by experienced artists with a strong portfolio in abstract art. Ensure the class offers comprehensive content, including color theory, techniques, and creative exercises. Interactive elements, such as live sessions, feedback on assignments, and community forums, can enhance learning. Check for flexible scheduling and lifetime access to materials for ongoing practice. Reviews and testimonials from previous students can provide insights into the course quality. Opt for classes that inspire creativity and provide practical skills to develop your unique artistic style.