Learning control theory outside of classes can be challenging but certainly possible. Here are some effective strategies you can adopt:

1. Online Resources: Take advantage of the wealth of online resources available for learning control theory. Websites like Khan Academy, Coursera, edX, and YouTube offer free or affordable courses and video lectures on the subject. Look for courses specifically focused on control theory or related topics such as feedback control systems or classical control.

1. Textbooks: Utilize textbooks as a primary learning resource. Some recommended textbooks for control theory include “Modern Control Engineering” by Katsuhiko Ogata, “Feedback Systems: An Introduction for Scientists and Engineers” by Karl J. Åström and Richard M. Murray, and “Control Systems Engineering” by Norman S. Nise. These books provide comprehensive coverage of control theory concepts and often include exercises and examples to reinforce your understanding.

1. Online Communities and Forums: Join online communities and forums dedicated to control theory or related topics. Participate in discussions, ask questions, and seek clarification on concepts you find challenging. Reddit, Stack Exchange, and specialized control theory forums are great places to connect with experts and enthusiasts who can provide guidance and insights.

1. Hands-on Projects: Engage in practical projects that involve control systems. This can help solidify your understanding of theory through practical application. Build small-scale control systems, such as a self-balancing robot, temperature controller, or motor speed controller. Implementing these projects will expose you to real-world challenges and enhance your problem-solving skills.

1. MATLAB and Simulations: MATLAB is a powerful tool commonly used in control theory. Familiarize yourself with MATLAB and its control system toolbox. You can use it to simulate and analyze control systems, design controllers, and visualize system behavior. MATLAB also provides numerous tutorials and examples to help you get started.

1. Academic Papers and Journals: Explore academic papers and journals in control theory to delve deeper into specific topics or cutting-edge research. IEEE Control Systems Magazine, Automatica, and the Journal of Control Theory and Applications are some notable publications in the field. While academic papers can be more advanced, they offer insights into the latest developments in control theory.

Remember to approach your learning with a systematic and disciplined mindset. Start with the fundamentals and gradually build your knowledge and skills. Practice solving problems, work through examples, and apply concepts to real-world scenarios. Consistency and perseverance are key to mastering control theory outside of a formal classroom setting.