AWS Certified SysOps Administrator Study Guide
Sara Perrott & Brett McLaughlin
99 Bottles of OOP (Milk, Ruby)
Sandi Metz & Katrina Owen & TJ Stankus
Common Stocks and Common Sense
Edgar Wachenheim III
Deployment with Docker
Srdjan Grubor
Mastering Spark with R
Javier Luraschi & Kevin Kuo & Edgar Ruiz
Spark: The Definitive Guide
Matei Zaharia & Bill Chambers