Written by a current PhD student in mathematics, this calculus study guide contains detailed step-by-step solutions to problems from past tests and exams at the University of Toronto. Based on the MAT 135/136 course, this handbook was written with the student in mind. While the problems originate from U of T, the material is easily comparable to any introductory university calculus course that doesn't focus on proofs. For a more rigorous approach, see the MAT 137 guide. After being a teaching assistant for the course for several years, Sergio found students constantly asking about solutions from other help manuals. The solutions were either wrong or poorly explained. He saw the need for a more comprehensive solution manual that explained every step in detail. Before beginning his PhD at Cornell University, he wrote this study guide to better help students having difficulty with mathematics.