Get Programming with Haskell
Will Kurt
Distributed systems for fun and profit
Mikito Takada
Write Yourself a Scheme in 48 Hours
Wikibooks contributors
Designing Elixir Systems with OTP (for Correl Roush)
James Edward Gray, II, Bruce A. Tate
A Gentle Path through the 12 Steps and 12 Principles Bundle
Patrick Carnes