Ten short chapters, free. In the first one you build a working AI tool in your browser and
share the link — about 40 minutes, nothing to install, nothing to pay. Stage 1 works on a
phone; the later stages need a computer you can install software on.
免费入门包，十章，都不长。第一章就能在浏览器里做出一个能用的 AI 小工具并把链接分享出去 ——
大约 40 分钟，不用安装，不用付费。第 1 阶段手机就能学，后面的阶段需要一台能装软件的电脑。