I have home tutor for almost a decade. I tough students from Primary Levels to O Levels. The subject I used to teach is Mathematics and Science subjects. I try to figure out the basic problems of a student fix it and move forward further. Use worksheets for better practice. Also make them watch videos and PowerPoint presentations. Try to have a friendly behavior so they can share their weakness and not feel nervous or shy. Take exams after completing every chapter. Keep the parents up to date.