Ritvik Rustagi, born in 2007, wrote ACE The AMC 10 and AMC 12. It is a free book containing more than 200 pages with over 250 practice problems with detailed solutions. It focus on topics found in algebra, geometry, number theory, and combinatorics. This book is written primarily to assist those that want to improve their problem solving skills and do well in math competitions. Many key techniques are highlighted along with important theorems.

The ACE AP Physics 1 book, written by Ritvik Rustagi, contains over 170 pages, 100 problems, and covers all the important topics for the AP exam. There are detailed solutions for every problem. The goal of this book is to make reviewing for the AP exams efficient. Many students often struggle with balancing various AP exams and approaching these tough problems efficiently. However, that is when the book comes in. It contains all the necessary topics to assist everyone in their mechanics journey in physics. This book can also be used for a traditional College level physics class. ​

The ACE AP Calculus BC book, written by Ritvik Rustagi, contains over 190 pages and over 150 problems and covers all the important topics for the AP exam. There are detailed solutions for every problem. The goal of this book is to make reviewing for the AP exams efficient. Many students often struggle with balancing various AP exams and approaching these tough problems efficiently. However, that is when the book comes in. It contains all the necessary topics to assist people in their calculus journey. This book can also be used for a traditional Calculus 1 class. It is not just limited to the AP class.

The ACE AP Calculus AB book contains over 190 pages and over 150 problems and covers all the important topics for the AP exam. There are detailed solutions for every problem. The goal of this book is to make reviewing for the AP exams efficient. Many students often struggle with balancing various AP exams and approaching these tough problems efficiently. However, that is when the book comes in. It contains all the necessary topics to assist people in their calculus journey. This book can also be used for a traditional Calculus 1 class. It is not just limited to the AP class.

The ACE Physics C: Mechanics book, written by Ritvik Rustagi, contains over 250 pages, more than 100 problems, and covers all the important topics for the AP exam. There are detailed solutions for every problem. The goal of this book is to make reviewing for the AP exams efficient. Many students often struggle with balancing various AP exams and approaching these tough problems efficiently. However, that is when the book comes in. It contains all the necessary topics to assist everyone in their mechanics journey in physics. This book can also be used for a traditional College level physics class that uses calculus.