I spent so many hundreds of dollars, and uncountable hours, trying to learn calculus in college. Total rip off. All I really needed was this $3 book and maybe a week of quality reading time. I'm at the halfway point and I already know more than all those college classes were able to teach me. I feel comfortable with math, something I never thought would happen.
If you're a student, buy this.
If you're struggling with math, buy this.
If you want to try again to master the math that was so bewildering in college, buy this.
If you just want an interesting and engaging read, buy this.
If you're a mathematical genius who does anti-derivates to lull yourself to sleep at night, you can give it a skip.
BEST MATH BOOK EVER!!!