https://www.amazon.com/Schaums-Outline-Elementary-Mathematics-Outlines/dp/007176254X https://www.amazon.com/Schaums-Outline-Elementary-Mathematic... Schaum's O

https://www.amazon.com/Schaums-Outline-Elementary-Mathematics-Outlines/dp/007176254X https://www.amazon.com/Schaums-Outline-Elementary-Mathematic... Schaum's Outlines are like that "Learn X in Y Minutes" site for school subjects. They give the clearest, most bare bones explanation so you can quickly identify gaps. I had the college algebra book for the required math class in technical school. Between that and YouTube, I was able to pass the class.