Dive into the world of digital electronics through this comprehensive 90-minute tutorial. Learn the fundamentals of working with LEDs, including current limiting and power supply considerations. Explore troubleshooting techniques for common issues like dim LEDs. Gain a deep understanding of transistors, their role in current amplification, and their use as switches. Discover how to implement buffer and inverter circuits using transistors. Progress through hands-on experiments and practical applications to solidify your knowledge of digital electronics concepts.