pfps-shopping-cart VS Lila

Gabriel Volpe has a book that goes over just that using the typelevel stack. I highly recommend it: https://leanpub.com/pfp-scala

The only issue I had was how to put all this knowledge together. For that I bought Practical FP in scala by Gabriel Vlope, it's not for beginners, tho but takes you through a project with the latest typelevel stack. Here's the link. https://leanpub.com/pfp-scala.

This is a really good book https://leanpub.com/pfp-scala

If you want a solid understanding of FP and not just FP in Scala, I highly recommend installing GHCup and working through Haskell Programming From First Principles. Then I would work through Scala With Cats, Essential Effects, and Practical FP in Scala for how all of that maps onto Scala.

Practical FP in Scala

BTW for learning good application structure with Tagless Final I really recommend the book Practical FP in Scala and its work-along example application. That's where I stole the pattern above from.

personally, i think using lichess.org in a mobile browser is much smoother than the app

Since Alchemy landed, I've been playing a lot more chess. The lichess client for Android is pretty awesome.

Playing lots and memorizing openings won't help much at your rating. Knowing opening principles helps. Doing chess puzzles in between games helps. Analyzing every game u play helps the most. It's free and easy to do on lichess.org . See if chess.com does free analysis and learning from your mistakes. I have jumped 200 points in the last year.

lichess.org

David Pérez (2000 FIDE, 2150 chess.com Blitz, 2400 lichess.org Blitz)

on lichess.org there is a limit to how much time you can add to your opponents clock