Self-studying in math, physics, and chemistry can be effectively achieved through various methods. Video lectures and textbooks are essential resources; engaging with both allows for a comprehensive understanding of the subjects. Solving problems from textbooks reinforces learning. For additional resources, Khan Academy offers free online lessons across a range of topics, making it a valuable tool for students. Open Yale Courses also provides access to selected lectures from Yale professors, offering a different perspective on the material. These platforms are particularly beneficial for students looking to complete their studies independently before the school year resumes.