To improve problem-solving skills, consistent practice is essential. Engaging with various resources, such as books and online materials, can provide valuable examples and advice. For students in 9th grade who have a solid theoretical foundation, it's recommended to start with numerical problem books appropriate for their grade level and gradually progress to more advanced topics. A structured approach to learning is beneficial: read a chapter, work through example problems without looking at solutions, analyze mistakes, and review concepts thoroughly. Critical thinking and applying theory to practical examples can enhance understanding and problem-solving abilities. Regular review and seeking help from teachers or mentors are also crucial for mastering challenging concepts.