I have a sister with a degree in biology. I borrowed some of her books, like "introduction to zoology". If you've been through high school, books like that are

I have a sister with a degree in biology. I borrowed some of her books, like "introduction to zoology". If you've been through high school, books like that are self-contained. For instance, it had an appendix on organic chemistry. Highly recommended, those books taught me much more about the world we live in than the various books on physics I've read on my own. And science.