Taking calculus and have hard time understanding the textbook. Help plz. My textbook is called Calculus:One Variable by Salas (10th Edition) I'm at University of Toronto in Canada. My course is named MAT137. A lot of students in my course don't read the textbook. They only do exercises. They say things like, "I don't understand what the books says." or "Just do exercises" or "Practice a lot" I feel frustrated with explanations because I have such a hard time understanding concepts. I,too, often just do exercises but I think I want to get some good understanding over the subject. Personally, I dislike the textbook because I think there isn't enough explanation. Thanks. Please let me know. I will provide more details to you replies.