Hi Gajre539: Thanks for your great inputs.
Indeed, I had the King Schools training DVDs for PPL courses (Cleared for Takeoff). Although it put me in sleep sometimes, most of the time I found it very helpful to accelerate my learning progress and help me to understand the real-world situation in a visual environment. I enjoy it overall but I never compared that with other available training materials and I wonder if other would be better? Like you said, sometimes I found the Kings' videos are boring and their jokes made me hard to laugh.
One important fact that I didn't clarify before is that, indeed, I am currently not flying at all while I am learning all of these. The very simple reason is that I currently couldn't afford to fly. However, I have a compelling passion on flying and have a very strong desire to learn as much as I could afford now in preparing myself for future when opportunity comes. That's why learning from those training videos are crucial for me as it will give me the "flying experience" that I don't have. After all, I found the materials are very interesting and is very enjoyable to learn, and I wanna find the best videos/materials that offers the most efficient training.