Part 6/8:
Art of Problem Solving (AoPS): A comprehensive platform offering resources from elementary to early college level.
Books:
"A Concise Introduction to Pure Mathematics" by Martin Liebeck for foundational concepts.
"Problem-Solving Strategies" by Arthur Engel, filled with problems from competitions.
"Love and Math: The Heart of Hidden Reality" by Edward Frenkel for a deeper philosophical understanding of mathematics.