I stumbled across Exercism last year and was immediately charmed. It's a website devoted to teaching programming languages. It's got a great UI, offers free mentoring (by a human!), and is entirely open source. Last January, they announced a new program called 12in23, where they challenged participants to try 12 new programming languages in 2023. Each month would have a theme (such as "Analytical
![12 Languages in 12 Months](https://cdn-ak-scissors.b.st-hatena.com/image/square/d6418ec0fd072978c287c6ac3ada056c257e73b2/height=288;version=1;width=512/https%3A%2F%2Fxavd.id%2Fstatic%2Flanguages-dbcfdf7420e5f3a7384f2f654d7503aa.png)