Writing an Interpreter in Go
Thorsten Ball
Learn You a Haskell for Great Good!
Miran Lipovaca
Racket Programming the Fun Way: From Strings to Turing Machines
James W. Stelly
RESTful Web APIs
Leonard Richardson & Mike Amundsen & Sam Ruby
Webapps in Go: the anti textbook
Suraj Patil
Test-Driven Development: Extensive Tutorial
Grzegorz Gałęzowski