Dive into an in-depth video tutorial on recursion, focusing on subset, subsequence, and string questions. Learn essential tips for solving string recursion problems, explore subset patterns, and discover how to convert recursive programs to iterative ones. Cover a range of topics including basic string questions, skipping characters and strings, subsequences, ASCII values, and handling duplicate elements. Gain insights into complexity analysis and practical applications of subset problems. Perfect for those preparing for technical interviews or seeking to enhance their data structures and algorithms skills.