I am currently taking an advanced calculus course and, for the most part, I really like it. However, I believe I could benefit from a supplemental textbook. My class uses Goldberg's Methods of Real Analysis. I would like to be able to find a text that offers more detailed explanations and, particularly, step-by-step examples to show the theorems. I suppose I need a "for dummies" version of advanced calculus. I am an older student, attempting to refresh/learn enough to get into graduate school in mathematics. Thanks for your help.