1️⃣ Introduction to Big Data & PySpark

• What is Big Data?

• Hadoop ecosystem overview

• Spark vs Hadoop MapReduce

• Installation & environment setup

• Introduction to PySpark architecture

2️⃣ PySpark Core Concepts

• RDDs (Resilient Distributed Datasets)

• Transformations & actions

• Lazy evaluation

• RDD persistence & optimization

3️⃣ PySpark DataFrames & SQL

• DataFrame creation & operations

• Schema definition

• Importing CSV, JSON, Parquet, ORC

• Spark SQL basics

• SQL queries on large datasets

• Window functions

4️⃣ Data Processing & ETL with PySpark

• Data cleaning

• Handling nulls & duplicates

• Joins & aggregations

• User-defined functions (UDFs)

• File formats & partitioning

• ETL pipelines with PySpark

5️⃣ Big Data Analytics with PySpark

• Exploratory data analysis

• Distributed computing principles

• Performance optimization techniques

• Caching & checkpointing

• Cluster management basics

6️⃣ PySpark MLlib (Basics)

• Basic ML algorithms with PySpark

• Feature engineering in Spark

• Pipelines & model evaluation

7️⃣ Real-Time & Batch Processing (Optional Module)

• Introduction to Spark Streaming

• Structured streaming concepts

• Batch processing workflows

8️⃣ Hands-on Projects

• ETL pipeline for large datasets

• Analytics dashboard-ready dataset creation

• Big Data business case implementation