The discussion centers around a new PF Insights post by micromass on self-studying basic high school mathematics. Participants suggest enhancing the post by including online resources like Khan Academy and MathIsPower4u.com, as well as recommending the book "Fundamentals of Freshman Mathematics" by Allendoerfer/Oakley for its clear exposition. There is a call for a review of the best online resources and a suggestion to add sections on combinatorics, probability, and descriptive statistics. Additionally, problem-solving resources such as Titu Andreescu's problem books and Schaum's Outlines: Intermediate Algebra are highlighted as valuable tools for learners.