Interesting!
I haven't done calculus in so long that this book was a quite a challenge; however, I read it through anyway, and I doubt my calculus was ever that good, yet I was familiar enough with some of the theories that I had fun reading this. There were times I referred to short tutorials on Youtube and lots of Google, but that's kind of my thing anyway. It's a short book, and If you're looking for a challenge that is not entirely uncomprehendable, I recommend this short book. I did like it, and I wil be rereading it for sure.