PHP, MySQL & JavaScript All in One, Sams Teach Yourself
Julie C. Meloni
Instant PHP Web Scraping
Jacob Ward
Learning JavaScript
Ethan Brown
Android Programming with Kotlin for Beginners
John Horton
Practical A/B Testing
Leemay Nassery
Next-Level A/B Testing
Testing Elixir
Jeffrey Matthias & Andrea Leopardi
Testing in Scala
Daniel Hinojosa
Property-Based Testing with PropEr, Erlang, and Elixir
Fred Hebert
Move on to JUnit 5
Baeldung