Resources

Art of Problem Solving (AoPS) 

https://mathcircle.berkeley.edu/

https://www.awesomemath.org/

https://www.imomath.com/

Canada IMO training 

British Math Olympiads 

Yufei Zhao 

Po-Shen Loh 

Alex Remorov 

Evan Chen 

Books

• The IMO Compendium: Dušan Djukić, Vladimir Janković, Ivan Matić, Nikola Petrović
• Problems From the Book , Titu Andreescu and Gabriel Dospinescu
• Straight From the Book , Titu Andreescu and Gabriel Dospinescu
• 110-geometry-problems-from-the IMO , Titu Andreescu and Cosmin Pohoata
• Lemmas in Olympiad Geometry , Titu Andreescu, Sam Korsky, and Cosmin Pohoata
• The Geometry of Remarkable Elements: Points, Lines, and Circles , Titu Andreescu, Dorin Andrica, Paul Blaga, and Dan Bränzei
• The Mathematical Reflections , Titu Andreescu and Maxim Ignatiuc
• New, Newer, and Newest Inequalities , Titu Andreescu and Marius Stanean
• 118 Inequalities for Mathematics Competitions , Titu Andreescu and Marius Stanean
• 113 Geometric Inequalities , Adrian Andreescu, Titu Andreescu, and Oleg Mushkarov
• Topics in Functional Equations , Titu Andreescu, Iurie Boreico, Oleg Mushkarov, and Nikolai Nikolov
• Topics in Geometric Inequalities , Titu Andreescu and Oleg Mushkarov
• Number Theory Concepts and Problems , Titu Andreescu, Gabriel Dospinescu, and Oleg Mushkarov
• A Romanian Problem Book , Titu Andreescu and Marian Tetiva
• Graphs , Radu Bumbacea
• Balkan Mathematical Olympiads , Mircea Becheanu and Bogdan Enescu
• Cuban Mathematical Olympiads,  Robert Bosch (translated by Enrique Treviño
• The Art of Problem Solving, Volume 1: the Basics, Lehoczky and Rusczyk

• The Art of Problem Solving, Volume 2: and Beyond, Lehoczky and Rusczyk
• Problem Solving Strategies, Engel
• Mathematical Olympiad Treasures, Andreescu and Enescu
• Mathematical Olympiad Challenges, Andreescu and Gelca
• The Art and Craft of Problem Solving, Zeitz 

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