For the other high school (maybe even college?) kids out there that want a free alternative (especially if your teacher doesn't specify a textbook), OpenStax by

For the other high school (maybe even college?) kids out there that want a free alternative (especially if your teacher doesn't specify a textbook), OpenStax by Rice University is pretty good. I've used their textbooks for the past few years. https://openstax.org https://openstax.org