Read Fundamentals Of Statistical Thinking: Tools And Applications Online Free [repack] -

Available via the Open Textbook Library, this book focuses on understanding complexity through modeling and data visualization.

The "Tools" section of the paper usually outlines specific graphical and numerical methods: Available via the Open Textbook Library, this book

How to summarize complex datasets into meaningful insights. Probability Theory: The logic behind risk and chance. Available via the Open Textbook Library