I was smart enough to earn an honors degree in philosophy from Harvard, but an aptitude test told me to avoid computer programming. I'm sure it was right. But then I designed a learning system for myself that quadrupled my aptitude for learning computer languages. It worked so well for me that I've used it to teach coding to grandmothers, cab drivers, musicians, and 50,000 other newbies. Quadruple your learning ability. Washington University research shows that a key teaching method I use-interactive recall practice-improves learning performance 400 percent. Understanding is easy. Remembering is hard. Computer languages are not inherently hard to understand, even for non-techies. is the problem. If you remember all of Chapter 1 through Chapter 10, you'll understand Chapter 11. But you don't remember. Though you read and read, most of it doesn't stick. You don't have a solid foundation to build on. Halfway through the book, it all collapses. That's when most people give up. Interactive exercises make it stick. Research shows that you will remember everything if you're repeatedly asked to recall it. That's the beauty of flash cards. But technology offers an even better way to make information stick. With my book you get almost a thousand interactive exercises-they're free online-that embed the whole book in your memory. Algorithms check your work to make sure you know what you think you know. When you stumble, you do the exercise again. You keep trying until you know the chapter cold. You won't get bored or sleepy. The exercises keep you engaged, give you extra practice where you're shaky, and prepare you for each next step. Every lesson is built on top of a solid foundation that you and I have carefully constructed. Each individual step is small. But all the little steps add up to real knowledge-knowledge that you retain. Really, it ain't that hard. Reviewing my books on Amazon, readers who've struggled with programming concepts like functions, loops, and scope write, "I had no idea these things were so simple!" You don't need to be a computer genius to learn Python. You just need to be smart about how you