I decided to do a little math refresh and revisit all I have learned since kindergarten up until now, focusing on topics that I know I have shortcoming in and topics where I struggled the most (looking at you Mathematical analysis).

To make the journey useful also to others, I decided to create a list of the resources that I found interesting, helpful, and well written. That being a highly subjective measure take this whole list with a grain of salt and in case of need refer to the Additional Resources section at the bottom of the page.

Areas of Mathematics

Foundations

• Math Foundations from Scratch
• Understanding Mathematics; Links to resources talking about how to understand mathematics, mathematical language and mathematical notation.

Algebra

• Engineering Math
• Beginning and Intermediate Algebra
• Algebra, Topology, Differential Calculus, and Optimization Theory For Computer Science and Machine Learning

Linear Algebra

Topics:

• Vector Spaces
• Matrices
• Systems of Linear Equations

Resources:

• Interactive Linear Algebra
• Elementary Linear Algebra

Calculus & Analysis

Topics:

• Differential
• Integral
• Series
• Vector
• Multivariable

Resources:

• Calculus Basic Concepts for High Schools
• Calculus of One and Many Variables
• Higher Maths for Beginners
• Analysis of Functions of one Variable
• Multivariable Calculus

Probability & Statistics

• Introduction to Modern Statistics (2nd Ed)

Discrete mathematics

Number theory

Additional resources

• Self Studying the MIT Applied Math Curriculum
• MIT Open Course - Mathematics
• The Encyclopedia of Mathematics
• Wikibooks:Mathematics bookshelf
• Online Mathematics Textbooks
• Free Programming Books - Mathematics
• Awesome Math
• Manga Guide Series
• Ask HN: How to learn math from zero for adults?
• Ask HN: Best beginner friendly linear algebra book?