Adding a personal introduction, overview of coding, pricing, and contact
information.
Also using a CDN to install TailwindCSS, which the TailwindCSS authors
discourage, but I don't want to setup a complicated build process at the
moment.
See the README.md for more context about this project.
TODO: I configure nginx to serve static files from /var/www/learn. I'd like to
symlink /var/www/learn to briefcase/learn as part of my `rebuild` script, but I
don't currently.