You can download this Data Science and Machine Learning book for free.

There are 4 sections for those who are starting:

• Python Primer
• Linear Algebra and Functional Analysis
• Probability and Statistics
• Multivariate Differentiation and Optimization

The rest of the chapters:

• Importing, Summarizing, and Visualizing Data
• Statistical Learning
• Monte Carlo Methods
• Unsupervised Learning
• Regression
• Regularization and Kernel Methods
• Classification
• Decision Trees and Ensemble Methods
• Deep Learning

Download the book here: https://people.smp.uq.edu.au/DirkKroese/DSML/DSML.pdf