Yet, the author fails to mention marketing invovled behind this. Any fool can write a book, but it does take effort to sell it. Such titles like "Teach Yourse

Yet, the author fails to mention marketing invovled behind this. Any fool can write a book, but it does take effort to sell it. Such titles like "Teach Yourself X in 21 days" are designed to give the user a small taste of what's involved AND to sell the damn book. Most of these books state right in the beginning that you have to constantly work at it to fully learn the material. So are these books worthless? Absolutely not. They offer the user a basic foundation to start learning and work up from there. The user can from there find communities and more advanced books to continue to learn. For me personally, these books gave me a foundation to continue to learn. But honestly, the best way I learned was actually coming up with small projects that I personally wanted to do.