I write up a "teaching-style" series on it.

To wit: https://littlegreenviper.com/series/swiftwater/

That series is almost abandoned, now, but it was instrumental, in my discovering how to write Swift.

This was one I wrote up, as I was exploring the SPM: https://littlegreenviper.com/series/spm/

Learning Bluetooth: https://littlegreenviper.com/series/bluetooth/

Writing a simple streaming server: https://littlegreenviper.com/series/streaming/

This was one that I wrote up, as I was learning CSS: https://littlegreenviper.com/series/stylist/