Eliza Mitchell has written a nice intro to Elm, describing the development of an app that uses PokeApi to show information about Pokémon (I was surprised to learn about the existence of PokeApi). The walkthrough includes fetching data from an API, random number generation, and writing decoders – all very useful topics for a beginner.
Bill St Clair is building a TweetDeck-like multi-column Mastodon client in Elm, currently in pre-alpha phase. You can check out the source. As part of this effort, he’s also created the billstclair/elm-mastodon package.