Read this if

• ✓ You want to learn Apache Spark directly from its creators.
• ✓ You are building or maintaining modern streaming applications.
• ✓ You need to understand Spark's usage, deployment, and maintenance.

Skip this for now if

• ✗ You are completely new to data processing concepts.
• ✗ You seek a broad overview of data science theory and algorithms.
• ✗ You prefer a quick reference or a very high-level introduction.