Html & CSS: For Beginners https://www.amazon.com/Html-Beginners-Guide-Easily-Programming-ebook/dp/B01MR5V15T
Python Programming for Beginners https://www.amazon.com/Python-Programming-Easily-Beginners-Language-ebook/dp/B01N1ZXVPL
Java Programming for Beginners https://www.amazon.com/Java-Programming-Easily-Beginners-Language-ebook/dp/B01N6QT3WM
适合新手看,有需要的自取吧,全 free 的