Newly listed sites

Deeper R language study for practising programmers

A practical R workflow for transforming and visualizing data

R examples organized around statistical methods

A Clojure learning book with further programming resources

Zig study for readers with prior programming experience

Targeted Ruby on Rails and Hotwire screencasts

Ruby on Rails lessons for new and returning developers

Learn Ruby by correcting ordered test-based exercises

Elixir practice by making small failing exercises pass

Community lessons and resources for learning Elixir

An Erlang book for programmers exploring functional ideas

A sustained introduction to Haskell concepts

Learn Go through test-driven development

Annotated programs introducing Go concepts

Small Rust exercises beside the language book

Smart-contract development and security learning tracks

Web3 learning through courses, projects and code

Smart-contract security study through vulnerable challenges

Ethereum development through practical coding challenges

Learn smart-contract coding by building games

Hands-on study of computing and cybersecurity foundations

Cryptography learning through interactive puzzles and challenges

Programming exercises that expose cryptographic weaknesses

Guided coding labs for building small applications and features