Alcumus on AoPS Permalink
A great way to practice problems
Math Links
Here’s a collection of useful resources for learning cool math!
AMC Learning Program Permalink
A free math program offering detailed materials and resources for students at the AMC level
The Essence of Calculus by 3Blue1Brown Permalink
A video series on calculus with an emphasis on understanding and intuition over memorization.
Combo Handout by me Permalink
A handout on combo. It’s not very good; click the description for what I suggest instead
Complex Numbers are Real by Welch Labs Permalink
A video series explaining complex numbers.
Induction Handout by me Permalink
My first ever handout!
Methods of Proof by hdigh Permalink
An excellent, beginner-friendly introduction to the four most comomn methods of proof, along with excellent examples and practice problems.