My top 3 were.
1. The Mistborn series by Brandon Sanderson. This series did a good job of balancing big and little picture, while givings us a neat form of magic to learn about.
2. Stock Market Cash Flow from the RDPD series. In 2016 I had read several books on fundamental(or value) investing, and this book helped me bust out of the thinking that, that style is the only way to look at, and earn in the stock market.
3. Snow Crash. This book was just fun. The characters were enjoyable to watch, and there was some clever stuff in this book.